Home / 99,428.07-137,187.99-56,397.29

Finding the Fourth Proportional to 99,428.07, 137,187.99 and 56,397.29

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Solution

The fourth proportional to 99,428.07, 137,187.99 and 56,397.29 is: 77,815.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,428.07 : 137,187.99 = 56,397.29 : x
  2. Step 2: Convert to fraction form
    99,428.07/137,187.99 = 56,397.29/x
  3. Step 3: Cross multiply
    99,428.07x = 137,187.99 × 56,397.29
  4. Step 4: Simplify right side
    99,428.07x = 7,737,030,170.61
  5. Step 5: Solve for x
    x = 7,737,030,170.61/99,428.07
  6. Step 6: Final answer
    x = 77,815.35

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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.