Home / 142,807.50-197,074.35-79,154.87

Finding the Fourth Proportional to 142,807.50, 197,074.35 and 79,154.87

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Solution

The fourth proportional to 142,807.50, 197,074.35 and 79,154.87 is: 109,233.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,807.50 : 197,074.35 = 79,154.87 : x
  2. Step 2: Convert to fraction form
    142,807.50/197,074.35 = 79,154.87/x
  3. Step 3: Cross multiply
    142,807.50x = 197,074.35 × 79,154.87
  4. Step 4: Simplify right side
    142,807.50x = 15,599,393,569.21
  5. Step 5: Solve for x
    x = 15,599,393,569.21/142,807.50
  6. Step 6: Final answer
    x = 109,233.71

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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.