Home / 142,817.52-197,085.15-79,154.76

Finding the Fourth Proportional to 142,817.52, 197,085.15 and 79,154.76

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Solution

The fourth proportional to 142,817.52, 197,085.15 and 79,154.76 is: 109,231.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,817.52 : 197,085.15 = 79,154.76 : x
  2. Step 2: Convert to fraction form
    142,817.52/197,085.15 = 79,154.76/x
  3. Step 3: Cross multiply
    142,817.52x = 197,085.15 × 79,154.76
  4. Step 4: Simplify right side
    142,817.52x = 15,600,227,747.81
  5. Step 5: Solve for x
    x = 15,600,227,747.81/142,817.52
  6. Step 6: Final answer
    x = 109,231.89

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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.