Home / 142,270.70-196,337.52-78,612.59

Finding the Fourth Proportional to 142,270.70, 196,337.52 and 78,612.59

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Solution

The fourth proportional to 142,270.70, 196,337.52 and 78,612.59 is: 108,487.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,270.70 : 196,337.52 = 78,612.59 : x
  2. Step 2: Convert to fraction form
    142,270.70/196,337.52 = 78,612.59/x
  3. Step 3: Cross multiply
    142,270.70x = 196,337.52 × 78,612.59
  4. Step 4: Simplify right side
    142,270.70x = 15,434,601,452.22
  5. Step 5: Solve for x
    x = 15,434,601,452.22/142,270.70
  6. Step 6: Final answer
    x = 108,487.57

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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.