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Finding the Fourth Proportional to 153,951.44, 212,434.25 and 85,972.19

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Solution

The fourth proportional to 153,951.44, 212,434.25 and 85,972.19 is: 118,631.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,951.44 : 212,434.25 = 85,972.19 : x
  2. Step 2: Convert to fraction form
    153,951.44/212,434.25 = 85,972.19/x
  3. Step 3: Cross multiply
    153,951.44x = 212,434.25 × 85,972.19
  4. Step 4: Simplify right side
    153,951.44x = 18,263,436,211.48
  5. Step 5: Solve for x
    x = 18,263,436,211.48/153,951.44
  6. Step 6: Final answer
    x = 118,631.15

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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.