Home / 124,815.40-172,275.18-71,113.60

Finding the Fourth Proportional to 124,815.40, 172,275.18 and 71,113.60

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Solution

The fourth proportional to 124,815.40, 172,275.18 and 71,113.60 is: 98,153.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,815.40 : 172,275.18 = 71,113.60 : x
  2. Step 2: Convert to fraction form
    124,815.40/172,275.18 = 71,113.60/x
  3. Step 3: Cross multiply
    124,815.40x = 172,275.18 × 71,113.60
  4. Step 4: Simplify right side
    124,815.40x = 12,251,108,240.45
  5. Step 5: Solve for x
    x = 12,251,108,240.45/124,815.40
  6. Step 6: Final answer
    x = 98,153.82

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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.