Home / 127,938.47-176,543.15-123,639.08

Finding the Fourth Proportional to 127,938.47, 176,543.15 and 123,639.08

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Solution

The fourth proportional to 127,938.47, 176,543.15 and 123,639.08 is: 170,610.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,938.47 : 176,543.15 = 123,639.08 : x
  2. Step 2: Convert to fraction form
    127,938.47/176,543.15 = 123,639.08/x
  3. Step 3: Cross multiply
    127,938.47x = 176,543.15 × 123,639.08
  4. Step 4: Simplify right side
    127,938.47x = 21,827,631,145.39
  5. Step 5: Solve for x
    x = 21,827,631,145.39/127,938.47
  6. Step 6: Final answer
    x = 170,610.39

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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.