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Finding the Fourth Proportional to 124,970, 172,460.76 and 68,382.32

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Solution

The fourth proportional to 124,970, 172,460.76 and 68,382.32 is: 94,368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,970 : 172,460.76 = 68,382.32 : x
  2. Step 2: Convert to fraction form
    124,970/172,460.76 = 68,382.32/x
  3. Step 3: Cross multiply
    124,970x = 172,460.76 × 68,382.32
  4. Step 4: Simplify right side
    124,970x = 11,793,266,877.76
  5. Step 5: Solve for x
    x = 11,793,266,877.76/124,970
  6. Step 6: Final answer
    x = 94,368.78

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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.