Home / 142,432.95-196,535.64-81,991.92

Finding the Fourth Proportional to 142,432.95, 196,535.64 and 81,991.92

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Solution

The fourth proportional to 142,432.95, 196,535.64 and 81,991.92 is: 113,136.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,432.95 : 196,535.64 = 81,991.92 : x
  2. Step 2: Convert to fraction form
    142,432.95/196,535.64 = 81,991.92/x
  3. Step 3: Cross multiply
    142,432.95x = 196,535.64 × 81,991.92
  4. Step 4: Simplify right side
    142,432.95x = 16,114,333,397.03
  5. Step 5: Solve for x
    x = 16,114,333,397.03/142,432.95
  6. Step 6: Final answer
    x = 113,136.27

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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.