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Finding the Fourth Proportional to 99,285.54, 136,959 and 62,920.20

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Solution

The fourth proportional to 99,285.54, 136,959 and 62,920.20 is: 86,794.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,285.54 : 136,959 = 62,920.20 : x
  2. Step 2: Convert to fraction form
    99,285.54/136,959 = 62,920.20/x
  3. Step 3: Cross multiply
    99,285.54x = 136,959 × 62,920.20
  4. Step 4: Simplify right side
    99,285.54x = 8,617,487,671.80
  5. Step 5: Solve for x
    x = 8,617,487,671.80/99,285.54
  6. Step 6: Final answer
    x = 86,794.99

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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.