Home / 141,981.60-212,972.40-42,157.20

Finding the Fourth Proportional to 141,981.60, 212,972.40 and 42,157.20

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Solution

The fourth proportional to 141,981.60, 212,972.40 and 42,157.20 is: 63,235.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,981.60 : 212,972.40 = 42,157.20 : x
  2. Step 2: Convert to fraction form
    141,981.60/212,972.40 = 42,157.20/x
  3. Step 3: Cross multiply
    141,981.60x = 212,972.40 × 42,157.20
  4. Step 4: Simplify right side
    141,981.60x = 8,978,320,061.28
  5. Step 5: Solve for x
    x = 8,978,320,061.28/141,981.60
  6. Step 6: Final answer
    x = 63,235.80

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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.