Home / 135,915.17-187,549.22-79,359.35

Finding the Fourth Proportional to 135,915.17, 187,549.22 and 79,359.35

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Solution

The fourth proportional to 135,915.17, 187,549.22 and 79,359.35 is: 109,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,915.17 : 187,549.22 = 79,359.35 : x
  2. Step 2: Convert to fraction form
    135,915.17/187,549.22 = 79,359.35/x
  3. Step 3: Cross multiply
    135,915.17x = 187,549.22 × 79,359.35
  4. Step 4: Simplify right side
    135,915.17x = 14,883,783,452.86
  5. Step 5: Solve for x
    x = 14,883,783,452.86/135,915.17
  6. Step 6: Final answer
    x = 109,507.89

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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.