Home / 99,646.08-137,511.52-57,207.20

Finding the Fourth Proportional to 99,646.08, 137,511.52 and 57,207.20

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Solution

The fourth proportional to 99,646.08, 137,511.52 and 57,207.20 is: 78,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,646.08 : 137,511.52 = 57,207.20 : x
  2. Step 2: Convert to fraction form
    99,646.08/137,511.52 = 57,207.20/x
  3. Step 3: Cross multiply
    99,646.08x = 137,511.52 × 57,207.20
  4. Step 4: Simplify right side
    99,646.08x = 7,866,649,026.94
  5. Step 5: Solve for x
    x = 7,866,649,026.94/99,646.08
  6. Step 6: Final answer
    x = 78,945.90

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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.