Home / 99,357.92-137,116.32-56,929.76

Finding the Fourth Proportional to 99,357.92, 137,116.32 and 56,929.76

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Solution

The fourth proportional to 99,357.92, 137,116.32 and 56,929.76 is: 78,564.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,357.92 : 137,116.32 = 56,929.76 : x
  2. Step 2: Convert to fraction form
    99,357.92/137,116.32 = 56,929.76/x
  3. Step 3: Cross multiply
    99,357.92x = 137,116.32 × 56,929.76
  4. Step 4: Simplify right side
    99,357.92x = 7,805,999,189.68
  5. Step 5: Solve for x
    x = 7,805,999,189.68/99,357.92
  6. Step 6: Final answer
    x = 78,564.44

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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.