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Finding the Fourth Proportional to 141,901.60, 212,560.80 and 71,820.40

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Solution

The fourth proportional to 141,901.60, 212,560.80 and 71,820.40 is: 107,583.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,901.60 : 212,560.80 = 71,820.40 : x
  2. Step 2: Convert to fraction form
    141,901.60/212,560.80 = 71,820.40/x
  3. Step 3: Cross multiply
    141,901.60x = 212,560.80 × 71,820.40
  4. Step 4: Simplify right side
    141,901.60x = 15,266,201,680.32
  5. Step 5: Solve for x
    x = 15,266,201,680.32/141,901.60
  6. Step 6: Final answer
    x = 107,583.01

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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.