Home / 112,384.98-155,084.31-61,387.38

Finding the Fourth Proportional to 112,384.98, 155,084.31 and 61,387.38

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Solution

The fourth proportional to 112,384.98, 155,084.31 and 61,387.38 is: 84,710.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,384.98 : 155,084.31 = 61,387.38 : x
  2. Step 2: Convert to fraction form
    112,384.98/155,084.31 = 61,387.38/x
  3. Step 3: Cross multiply
    112,384.98x = 155,084.31 × 61,387.38
  4. Step 4: Simplify right side
    112,384.98x = 9,520,219,470.01
  5. Step 5: Solve for x
    x = 9,520,219,470.01/112,384.98
  6. Step 6: Final answer
    x = 84,710.78

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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.