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Finding the Fourth Proportional to 99,398.98, 137,227.16 and 65,505.95

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Solution

The fourth proportional to 99,398.98, 137,227.16 and 65,505.95 is: 90,435.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,398.98 : 137,227.16 = 65,505.95 : x
  2. Step 2: Convert to fraction form
    99,398.98/137,227.16 = 65,505.95/x
  3. Step 3: Cross multiply
    99,398.98x = 137,227.16 × 65,505.95
  4. Step 4: Simplify right side
    99,398.98x = 8,989,194,467.94
  5. Step 5: Solve for x
    x = 8,989,194,467.94/99,398.98
  6. Step 6: Final answer
    x = 90,435.48

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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.