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Finding the Fourth Proportional to 125,820.80, 173,612.88 and 72,095.48

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Solution

The fourth proportional to 125,820.80, 173,612.88 and 72,095.48 is: 99,480.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,820.80 : 173,612.88 = 72,095.48 : x
  2. Step 2: Convert to fraction form
    125,820.80/173,612.88 = 72,095.48/x
  3. Step 3: Cross multiply
    125,820.80x = 173,612.88 × 72,095.48
  4. Step 4: Simplify right side
    125,820.80x = 12,516,703,917.78
  5. Step 5: Solve for x
    x = 12,516,703,917.78/125,820.80
  6. Step 6: Final answer
    x = 99,480.40

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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.