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Finding the Fourth Proportional to 84,711.74, 127,266.18 and 79,924.28

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Solution

The fourth proportional to 84,711.74, 127,266.18 and 79,924.28 is: 120,073.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,711.74 : 127,266.18 = 79,924.28 : x
  2. Step 2: Convert to fraction form
    84,711.74/127,266.18 = 79,924.28/x
  3. Step 3: Cross multiply
    84,711.74x = 127,266.18 × 79,924.28
  4. Step 4: Simplify right side
    84,711.74x = 10,171,657,168.52
  5. Step 5: Solve for x
    x = 10,171,657,168.52/84,711.74
  6. Step 6: Final answer
    x = 120,073.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.