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Finding the Fourth Proportional to 158,652.16, 218,938.70 and 86,054.86

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Solution

The fourth proportional to 158,652.16, 218,938.70 and 86,054.86 is: 118,755.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,652.16 : 218,938.70 = 86,054.86 : x
  2. Step 2: Convert to fraction form
    158,652.16/218,938.70 = 86,054.86/x
  3. Step 3: Cross multiply
    158,652.16x = 218,938.70 × 86,054.86
  4. Step 4: Simplify right side
    158,652.16x = 18,840,739,939.57
  5. Step 5: Solve for x
    x = 18,840,739,939.57/158,652.16
  6. Step 6: Final answer
    x = 118,755.02

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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.