Home / 124,915.10-172,378.54-71,217.41

Finding the Fourth Proportional to 124,915.10, 172,378.54 and 71,217.41

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Solution

The fourth proportional to 124,915.10, 172,378.54 and 71,217.41 is: 98,277.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,915.10 : 172,378.54 = 71,217.41 : x
  2. Step 2: Convert to fraction form
    124,915.10/172,378.54 = 71,217.41/x
  3. Step 3: Cross multiply
    124,915.10x = 172,378.54 × 71,217.41
  4. Step 4: Simplify right side
    124,915.10x = 12,276,353,158.38
  5. Step 5: Solve for x
    x = 12,276,353,158.38/124,915.10
  6. Step 6: Final answer
    x = 98,277.58

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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.