Home / 138,795,875.28-191,535,969.48-76,916,087.76

Finding the Fourth Proportional to 138,795,875.28, 191,535,969.48 and 76,916,087.76

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Solution

The fourth proportional to 138,795,875.28, 191,535,969.48 and 76,916,087.76 is: 106,142,905.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,795,875.28 : 191,535,969.48 = 76,916,087.76 : x
  2. Step 2: Convert to fraction form
    138,795,875.28/191,535,969.48 = 76,916,087.76/x
  3. Step 3: Cross multiply
    138,795,875.28x = 191,535,969.48 × 76,916,087.76
  4. Step 4: Simplify right side
    138,795,875.28x = 14,732,197,437,720,362
  5. Step 5: Solve for x
    x = 14,732,197,437,720,362/138,795,875.28
  6. Step 6: Final answer
    x = 106,142,905.24

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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.