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Finding the Fourth Proportional to 125,805.47, 173,423.72 and 83,290.19

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Solution

The fourth proportional to 125,805.47, 173,423.72 and 83,290.19 is: 114,816.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,805.47 : 173,423.72 = 83,290.19 : x
  2. Step 2: Convert to fraction form
    125,805.47/173,423.72 = 83,290.19/x
  3. Step 3: Cross multiply
    125,805.47x = 173,423.72 × 83,290.19
  4. Step 4: Simplify right side
    125,805.47x = 14,444,494,172.86
  5. Step 5: Solve for x
    x = 14,444,494,172.86/125,805.47
  6. Step 6: Final answer
    x = 114,816.11

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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.