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Finding the Fourth Proportional to 92,211.60, 138,317.40 and 45,458.40

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Solution

The fourth proportional to 92,211.60, 138,317.40 and 45,458.40 is: 68,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,211.60 : 138,317.40 = 45,458.40 : x
  2. Step 2: Convert to fraction form
    92,211.60/138,317.40 = 45,458.40/x
  3. Step 3: Cross multiply
    92,211.60x = 138,317.40 × 45,458.40
  4. Step 4: Simplify right side
    92,211.60x = 6,287,687,696.16
  5. Step 5: Solve for x
    x = 6,287,687,696.16/92,211.60
  6. Step 6: Final answer
    x = 68,187.60

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1.5x scale

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.