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Finding the Fourth Proportional to 158,070.06, 218,133.63 and 86,449.86

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Solution

The fourth proportional to 158,070.06, 218,133.63 and 86,449.86 is: 119,299.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,070.06 : 218,133.63 = 86,449.86 : x
  2. Step 2: Convert to fraction form
    158,070.06/218,133.63 = 86,449.86/x
  3. Step 3: Cross multiply
    158,070.06x = 218,133.63 × 86,449.86
  4. Step 4: Simplify right side
    158,070.06x = 18,857,621,774.79
  5. Step 5: Solve for x
    x = 18,857,621,774.79/158,070.06
  6. Step 6: Final answer
    x = 119,299.14

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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.