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Finding the Fourth Proportional to 99,737.16, 137,649.38 and 72,866.22

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Solution

The fourth proportional to 99,737.16, 137,649.38 and 72,866.22 is: 100,564.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,737.16 : 137,649.38 = 72,866.22 : x
  2. Step 2: Convert to fraction form
    99,737.16/137,649.38 = 72,866.22/x
  3. Step 3: Cross multiply
    99,737.16x = 137,649.38 × 72,866.22
  4. Step 4: Simplify right side
    99,737.16x = 10,029,990,005.94
  5. Step 5: Solve for x
    x = 10,029,990,005.94/99,737.16
  6. Step 6: Final answer
    x = 100,564.22

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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.