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Finding the Fourth Proportional to 158,360.13, 218,454.17 and 97,911.45

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Solution

The fourth proportional to 158,360.13, 218,454.17 and 97,911.45 is: 135,066.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,360.13 : 218,454.17 = 97,911.45 : x
  2. Step 2: Convert to fraction form
    158,360.13/218,454.17 = 97,911.45/x
  3. Step 3: Cross multiply
    158,360.13x = 218,454.17 × 97,911.45
  4. Step 4: Simplify right side
    158,360.13x = 21,389,164,053.69
  5. Step 5: Solve for x
    x = 21,389,164,053.69/158,360.13
  6. Step 6: Final answer
    x = 135,066.60

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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.