Home / 124,915.72-187,242.36-45,979.60

Finding the Fourth Proportional to 124,915.72, 187,242.36 and 45,979.60

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Solution

The fourth proportional to 124,915.72, 187,242.36 and 45,979.60 is: 68,921.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,915.72 : 187,242.36 = 45,979.60 : x
  2. Step 2: Convert to fraction form
    124,915.72/187,242.36 = 45,979.60/x
  3. Step 3: Cross multiply
    124,915.72x = 187,242.36 × 45,979.60
  4. Step 4: Simplify right side
    124,915.72x = 8,609,328,815.86
  5. Step 5: Solve for x
    x = 8,609,328,815.86/124,915.72
  6. Step 6: Final answer
    x = 68,921.10

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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.