Home / 142,026.28-195,996.13-78,364.08

Finding the Fourth Proportional to 142,026.28, 195,996.13 and 78,364.08

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Solution

The fourth proportional to 142,026.28, 195,996.13 and 78,364.08 is: 108,142.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,026.28 : 195,996.13 = 78,364.08 : x
  2. Step 2: Convert to fraction form
    142,026.28/195,996.13 = 78,364.08/x
  3. Step 3: Cross multiply
    142,026.28x = 195,996.13 × 78,364.08
  4. Step 4: Simplify right side
    142,026.28x = 15,359,056,215.10
  5. Step 5: Solve for x
    x = 15,359,056,215.10/142,026.28
  6. Step 6: Final answer
    x = 108,142.36

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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.