Home / 142,001.40-195,961.50-78,346.20

Finding the Fourth Proportional to 142,001.40, 195,961.50 and 78,346.20

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Solution

The fourth proportional to 142,001.40, 195,961.50 and 78,346.20 is: 108,117.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,001.40 : 195,961.50 = 78,346.20 : x
  2. Step 2: Convert to fraction form
    142,001.40/195,961.50 = 78,346.20/x
  3. Step 3: Cross multiply
    142,001.40x = 195,961.50 × 78,346.20
  4. Step 4: Simplify right side
    142,001.40x = 15,352,838,871.30
  5. Step 5: Solve for x
    x = 15,352,838,871.30/142,001.40
  6. Step 6: Final answer
    x = 108,117.52

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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.