Home / 124,903.47-172,362.49-71,205.78

Finding the Fourth Proportional to 124,903.47, 172,362.49 and 71,205.78

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Solution

The fourth proportional to 124,903.47, 172,362.49 and 71,205.78 is: 98,261.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,903.47 : 172,362.49 = 71,205.78 : x
  2. Step 2: Convert to fraction form
    124,903.47/172,362.49 = 71,205.78/x
  3. Step 3: Cross multiply
    124,903.47x = 172,362.49 × 71,205.78
  4. Step 4: Simplify right side
    124,903.47x = 12,273,205,543.19
  5. Step 5: Solve for x
    x = 12,273,205,543.19/124,903.47
  6. Step 6: Final answer
    x = 98,261.53

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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.