Home / 137,107,086.10-189,207,758.28-78,371,012.38

Finding the Fourth Proportional to 137,107,086.10, 189,207,758.28 and 78,371,012.38

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Solution

The fourth proportional to 137,107,086.10, 189,207,758.28 and 78,371,012.38 is: 108,151,985.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,107,086.10 : 189,207,758.28 = 78,371,012.38 : x
  2. Step 2: Convert to fraction form
    137,107,086.10/189,207,758.28 = 78,371,012.38/x
  3. Step 3: Cross multiply
    137,107,086.10x = 189,207,758.28 × 78,371,012.38
  4. Step 4: Simplify right side
    137,107,086.10x = 14,828,403,566,553,926
  5. Step 5: Solve for x
    x = 14,828,403,566,553,926/137,107,086.10
  6. Step 6: Final answer
    x = 108,151,985.34

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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.