Home / 122,742.59-169,164.59-90,856.13

Finding the Fourth Proportional to 122,742.59, 169,164.59 and 90,856.13

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Solution

The fourth proportional to 122,742.59, 169,164.59 and 90,856.13 is: 125,218.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,742.59 : 169,164.59 = 90,856.13 : x
  2. Step 2: Convert to fraction form
    122,742.59/169,164.59 = 90,856.13/x
  3. Step 3: Cross multiply
    122,742.59x = 169,164.59 × 90,856.13
  4. Step 4: Simplify right side
    122,742.59x = 15,369,638,680.33
  5. Step 5: Solve for x
    x = 15,369,638,680.33/122,742.59
  6. Step 6: Final answer
    x = 125,218.47

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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.