Home / 122,980.11-169,712.90-71,307.22

Finding the Fourth Proportional to 122,980.11, 169,712.90 and 71,307.22

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Solution

The fourth proportional to 122,980.11, 169,712.90 and 71,307.22 is: 98,404.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,980.11 : 169,712.90 = 71,307.22 : x
  2. Step 2: Convert to fraction form
    122,980.11/169,712.90 = 71,307.22/x
  3. Step 3: Cross multiply
    122,980.11x = 169,712.90 × 71,307.22
  4. Step 4: Simplify right side
    122,980.11x = 12,101,755,097.14
  5. Step 5: Solve for x
    x = 12,101,755,097.14/122,980.11
  6. Step 6: Final answer
    x = 98,404.17

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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.