Home / 142,877.72-197,164.02-79,214.92

Finding the Fourth Proportional to 142,877.72, 197,164.02 and 79,214.92

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Solution

The fourth proportional to 142,877.72, 197,164.02 and 79,214.92 is: 109,312.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,877.72 : 197,164.02 = 79,214.92 : x
  2. Step 2: Convert to fraction form
    142,877.72/197,164.02 = 79,214.92/x
  3. Step 3: Cross multiply
    142,877.72x = 197,164.02 × 79,214.92
  4. Step 4: Simplify right side
    142,877.72x = 15,618,332,071.18
  5. Step 5: Solve for x
    x = 15,618,332,071.18/142,877.72
  6. Step 6: Final answer
    x = 109,312.58

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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.