Home / 117,248.40-161,876.16-90,339.84

Finding the Fourth Proportional to 117,248.40, 161,876.16 and 90,339.84

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Solution

The fourth proportional to 117,248.40, 161,876.16 and 90,339.84 is: 124,725.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,248.40 : 161,876.16 = 90,339.84 : x
  2. Step 2: Convert to fraction form
    117,248.40/161,876.16 = 90,339.84/x
  3. Step 3: Cross multiply
    117,248.40x = 161,876.16 × 90,339.84
  4. Step 4: Simplify right side
    117,248.40x = 14,623,866,394.21
  5. Step 5: Solve for x
    x = 14,623,866,394.21/117,248.40
  6. Step 6: Final answer
    x = 124,725.51

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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.