Home / 142,000.95-195,970.82-81,591.15

Finding the Fourth Proportional to 142,000.95, 195,970.82 and 81,591.15

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Solution

The fourth proportional to 142,000.95, 195,970.82 and 81,591.15 is: 112,601.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,000.95 : 195,970.82 = 81,591.15 : x
  2. Step 2: Convert to fraction form
    142,000.95/195,970.82 = 81,591.15/x
  3. Step 3: Cross multiply
    142,000.95x = 195,970.82 × 81,591.15
  4. Step 4: Simplify right side
    142,000.95x = 15,989,484,162.29
  5. Step 5: Solve for x
    x = 15,989,484,162.29/142,000.95
  6. Step 6: Final answer
    x = 112,601.25

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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.