Home / 123,931.28-171,011.29-70,204.79

Finding the Fourth Proportional to 123,931.28, 171,011.29 and 70,204.79

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Solution

The fourth proportional to 123,931.28, 171,011.29 and 70,204.79 is: 96,874.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,931.28 : 171,011.29 = 70,204.79 : x
  2. Step 2: Convert to fraction form
    123,931.28/171,011.29 = 70,204.79/x
  3. Step 3: Cross multiply
    123,931.28x = 171,011.29 × 70,204.79
  4. Step 4: Simplify right side
    123,931.28x = 12,005,811,351.06
  5. Step 5: Solve for x
    x = 12,005,811,351.06/123,931.28
  6. Step 6: Final answer
    x = 96,874.75

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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.