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Finding the Fourth Proportional to 158,017.93, 218,064.76 and 86,398.00

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Solution

The fourth proportional to 158,017.93, 218,064.76 and 86,398.00 is: 119,229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,017.93 : 218,064.76 = 86,398.00 : x
  2. Step 2: Convert to fraction form
    158,017.93/218,064.76 = 86,398.00/x
  3. Step 3: Cross multiply
    158,017.93x = 218,064.76 × 86,398.00
  4. Step 4: Simplify right side
    158,017.93x = 18,840,358,373.32
  5. Step 5: Solve for x
    x = 18,840,358,373.32/158,017.93
  6. Step 6: Final answer
    x = 119,229.25

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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.