Home / 142,777.92-197,030.40-79,115.52

Finding the Fourth Proportional to 142,777.92, 197,030.40 and 79,115.52

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Solution

The fourth proportional to 142,777.92, 197,030.40 and 79,115.52 is: 109,177.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,777.92 : 197,030.40 = 79,115.52 : x
  2. Step 2: Convert to fraction form
    142,777.92/197,030.40 = 79,115.52/x
  3. Step 3: Cross multiply
    142,777.92x = 197,030.40 × 79,115.52
  4. Step 4: Simplify right side
    142,777.92x = 15,588,162,551.81
  5. Step 5: Solve for x
    x = 15,588,162,551.81/142,777.92
  6. Step 6: Final answer
    x = 109,177.68

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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.