Home / 99,892.17-137,855.40-57,450.75

Finding the Fourth Proportional to 99,892.17, 137,855.40 and 57,450.75

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Solution

The fourth proportional to 99,892.17, 137,855.40 and 57,450.75 is: 79,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,892.17 : 137,855.40 = 57,450.75 : x
  2. Step 2: Convert to fraction form
    99,892.17/137,855.40 = 57,450.75/x
  3. Step 3: Cross multiply
    99,892.17x = 137,855.40 × 57,450.75
  4. Step 4: Simplify right side
    99,892.17x = 7,919,896,121.55
  5. Step 5: Solve for x
    x = 7,919,896,121.55/99,892.17
  6. Step 6: Final answer
    x = 79,284.45

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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.