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Finding the Fourth Proportional to 99,613.80, 137,467.02 and 54,901.80

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Solution

The fourth proportional to 99,613.80, 137,467.02 and 54,901.80 is: 75,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,613.80 : 137,467.02 = 54,901.80 : x
  2. Step 2: Convert to fraction form
    99,613.80/137,467.02 = 54,901.80/x
  3. Step 3: Cross multiply
    99,613.80x = 137,467.02 × 54,901.80
  4. Step 4: Simplify right side
    99,613.80x = 7,547,186,838.64
  5. Step 5: Solve for x
    x = 7,547,186,838.64/99,613.80
  6. Step 6: Final answer
    x = 75,764.47

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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.