Home / 122,720.60-169,368.36-68,278.16

Finding the Fourth Proportional to 122,720.60, 169,368.36 and 68,278.16

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Solution

The fourth proportional to 122,720.60, 169,368.36 and 68,278.16 is: 94,231.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,720.60 : 169,368.36 = 68,278.16 : x
  2. Step 2: Convert to fraction form
    122,720.60/169,368.36 = 68,278.16/x
  3. Step 3: Cross multiply
    122,720.60x = 169,368.36 × 68,278.16
  4. Step 4: Simplify right side
    122,720.60x = 11,564,159,983.02
  5. Step 5: Solve for x
    x = 11,564,159,983.02/122,720.60
  6. Step 6: Final answer
    x = 94,231.61

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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.