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Finding the Fourth Proportional to 125,081.60, 172,612.32 and 68,492.48

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Solution

The fourth proportional to 125,081.60, 172,612.32 and 68,492.48 is: 94,519.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,081.60 : 172,612.32 = 68,492.48 : x
  2. Step 2: Convert to fraction form
    125,081.60/172,612.32 = 68,492.48/x
  3. Step 3: Cross multiply
    125,081.60x = 172,612.32 × 68,492.48
  4. Step 4: Simplify right side
    125,081.60x = 11,822,645,875.35
  5. Step 5: Solve for x
    x = 11,822,645,875.35/125,081.60
  6. Step 6: Final answer
    x = 94,519.46

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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.