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Finding the Fourth Proportional to 124,627.60, 186,919.80 and 45,701.20

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Solution

The fourth proportional to 124,627.60, 186,919.80 and 45,701.20 is: 68,543.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,627.60 : 186,919.80 = 45,701.20 : x
  2. Step 2: Convert to fraction form
    124,627.60/186,919.80 = 45,701.20/x
  3. Step 3: Cross multiply
    124,627.60x = 186,919.80 × 45,701.20
  4. Step 4: Simplify right side
    124,627.60x = 8,542,459,163.76
  5. Step 5: Solve for x
    x = 8,542,459,163.76/124,627.60
  6. Step 6: Final answer
    x = 68,543.88

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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.