Home / 138,786,438.84-191,526,426.63-76,907,810.76

Finding the Fourth Proportional to 138,786,438.84, 191,526,426.63 and 76,907,810.76

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Solution

The fourth proportional to 138,786,438.84, 191,526,426.63 and 76,907,810.76 is: 106,133,411.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,786,438.84 : 191,526,426.63 = 76,907,810.76 : x
  2. Step 2: Convert to fraction form
    138,786,438.84/191,526,426.63 = 76,907,810.76/x
  3. Step 3: Cross multiply
    138,786,438.84x = 191,526,426.63 × 76,907,810.76
  4. Step 4: Simplify right side
    138,786,438.84x = 14,729,878,174,799,066
  5. Step 5: Solve for x
    x = 14,729,878,174,799,066/138,786,438.84
  6. Step 6: Final answer
    x = 106,133,411.15

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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.