Home / 138,606,739,381.86-191,278,423,432.15-76,808,341,308.10

Finding the Fourth Proportional to 138,606,739,381.86, 191,278,423,432.15 and 76,808,341,308.10

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Solution

The fourth proportional to 138,606,739,381.86, 191,278,423,432.15 and 76,808,341,308.10 is: 105,996,133,358.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,606,739,381.86 : 191,278,423,432.15 = 76,808,341,308.10 : x
  2. Step 2: Convert to fraction form
    138,606,739,381.86/191,278,423,432.15 = 76,808,341,308.10/x
  3. Step 3: Cross multiply
    138,606,739,381.86x = 191,278,423,432.15 × 76,808,341,308.10
  4. Step 4: Simplify right side
    138,606,739,381.86x = 14,691,778,431,851,851,415,552
  5. Step 5: Solve for x
    x = 14,691,778,431,851,851,415,552/138,606,739,381.86
  6. Step 6: Final answer
    x = 105,996,133,358.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.