Home / 142,001.95-195,972.20-81,592.15

Finding the Fourth Proportional to 142,001.95, 195,972.20 and 81,592.15

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Solution

The fourth proportional to 142,001.95, 195,972.20 and 81,592.15 is: 112,602.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,001.95 : 195,972.20 = 81,592.15 : x
  2. Step 2: Convert to fraction form
    142,001.95/195,972.20 = 81,592.15/x
  3. Step 3: Cross multiply
    142,001.95x = 195,972.20 × 81,592.15
  4. Step 4: Simplify right side
    142,001.95x = 15,989,793,138.23
  5. Step 5: Solve for x
    x = 15,989,793,138.23/142,001.95
  6. Step 6: Final answer
    x = 112,602.63

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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.