Home / 142,830.92-197,103.48-79,168.16

Finding the Fourth Proportional to 142,830.92, 197,103.48 and 79,168.16

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Solution

The fourth proportional to 142,830.92, 197,103.48 and 79,168.16 is: 109,250.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,830.92 : 197,103.48 = 79,168.16 : x
  2. Step 2: Convert to fraction form
    142,830.92/197,103.48 = 79,168.16/x
  3. Step 3: Cross multiply
    142,830.92x = 197,103.48 × 79,168.16
  4. Step 4: Simplify right side
    142,830.92x = 15,604,319,841.20
  5. Step 5: Solve for x
    x = 15,604,319,841.20/142,830.92
  6. Step 6: Final answer
    x = 109,250.29

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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.