Home / 142,358.13-196,454.16-85,780.44

Finding the Fourth Proportional to 142,358.13, 196,454.16 and 85,780.44

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Solution

The fourth proportional to 142,358.13, 196,454.16 and 85,780.44 is: 118,376.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,358.13 : 196,454.16 = 85,780.44 : x
  2. Step 2: Convert to fraction form
    142,358.13/196,454.16 = 85,780.44/x
  3. Step 3: Cross multiply
    142,358.13x = 196,454.16 × 85,780.44
  4. Step 4: Simplify right side
    142,358.13x = 16,851,924,284.63
  5. Step 5: Solve for x
    x = 16,851,924,284.63/142,358.13
  6. Step 6: Final answer
    x = 118,376.97

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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.