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Finding the Fourth Proportional to 129,874.60, 194,763.30 and 45,602.20

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Solution

The fourth proportional to 129,874.60, 194,763.30 and 45,602.20 is: 68,386.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,874.60 : 194,763.30 = 45,602.20 : x
  2. Step 2: Convert to fraction form
    129,874.60/194,763.30 = 45,602.20/x
  3. Step 3: Cross multiply
    129,874.60x = 194,763.30 × 45,602.20
  4. Step 4: Simplify right side
    129,874.60x = 8,881,634,959.26
  5. Step 5: Solve for x
    x = 8,881,634,959.26/129,874.60
  6. Step 6: Final answer
    x = 68,386.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.