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Finding the Fourth Proportional to 99,514.66, 137,339.93 and 74,320.42

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Solution

The fourth proportional to 99,514.66, 137,339.93 and 74,320.42 is: 102,569.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,514.66 : 137,339.93 = 74,320.42 : x
  2. Step 2: Convert to fraction form
    99,514.66/137,339.93 = 74,320.42/x
  3. Step 3: Cross multiply
    99,514.66x = 137,339.93 × 74,320.42
  4. Step 4: Simplify right side
    99,514.66x = 10,207,161,280.37
  5. Step 5: Solve for x
    x = 10,207,161,280.37/99,514.66
  6. Step 6: Final answer
    x = 102,569.42

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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.