Home / 142,820.92-197,085.04-79,154.92

Finding the Fourth Proportional to 142,820.92, 197,085.04 and 79,154.92

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Solution

The fourth proportional to 142,820.92, 197,085.04 and 79,154.92 is: 109,229.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,820.92 : 197,085.04 = 79,154.92 : x
  2. Step 2: Convert to fraction form
    142,820.92/197,085.04 = 79,154.92/x
  3. Step 3: Cross multiply
    142,820.92x = 197,085.04 × 79,154.92
  4. Step 4: Simplify right side
    142,820.92x = 15,600,250,574.40
  5. Step 5: Solve for x
    x = 15,600,250,574.40/142,820.92
  6. Step 6: Final answer
    x = 109,229.45

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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.