Home / 102,439.73-141,356.49-57,113.45

Finding the Fourth Proportional to 102,439.73, 141,356.49 and 57,113.45

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Solution

The fourth proportional to 102,439.73, 141,356.49 and 57,113.45 is: 78,810.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,439.73 : 141,356.49 = 57,113.45 : x
  2. Step 2: Convert to fraction form
    102,439.73/141,356.49 = 57,113.45/x
  3. Step 3: Cross multiply
    102,439.73x = 141,356.49 × 57,113.45
  4. Step 4: Simplify right side
    102,439.73x = 8,073,356,117.01
  5. Step 5: Solve for x
    x = 8,073,356,117.01/102,439.73
  6. Step 6: Final answer
    x = 78,810.79

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1.5x scale

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.