Home / 99,507.32-137,312.52-56,481.76

Finding the Fourth Proportional to 99,507.32, 137,312.52 and 56,481.76

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Solution

The fourth proportional to 99,507.32, 137,312.52 and 56,481.76 is: 77,940.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,507.32 : 137,312.52 = 56,481.76 : x
  2. Step 2: Convert to fraction form
    99,507.32/137,312.52 = 56,481.76/x
  3. Step 3: Cross multiply
    99,507.32x = 137,312.52 × 56,481.76
  4. Step 4: Simplify right side
    99,507.32x = 7,755,652,799.64
  5. Step 5: Solve for x
    x = 7,755,652,799.64/99,507.32
  6. Step 6: Final answer
    x = 77,940.53

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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.