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Finding the Fourth Proportional to 99,572.80, 137,461.25 and 67,476.98

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Solution

The fourth proportional to 99,572.80, 137,461.25 and 67,476.98 is: 93,152.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,572.80 : 137,461.25 = 67,476.98 : x
  2. Step 2: Convert to fraction form
    99,572.80/137,461.25 = 67,476.98/x
  3. Step 3: Cross multiply
    99,572.80x = 137,461.25 × 67,476.98
  4. Step 4: Simplify right side
    99,572.80x = 9,275,470,017.03
  5. Step 5: Solve for x
    x = 9,275,470,017.03/99,572.80
  6. Step 6: Final answer
    x = 93,152.65

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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.