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Finding the Fourth Proportional to 158,262.28, 218,406.87 and 86,648.98

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Solution

The fourth proportional to 158,262.28, 218,406.87 and 86,648.98 is: 119,578.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,262.28 : 218,406.87 = 86,648.98 : x
  2. Step 2: Convert to fraction form
    158,262.28/218,406.87 = 86,648.98/x
  3. Step 3: Cross multiply
    158,262.28x = 218,406.87 × 86,648.98
  4. Step 4: Simplify right side
    158,262.28x = 18,924,732,510.49
  5. Step 5: Solve for x
    x = 18,924,732,510.49/158,262.28
  6. Step 6: Final answer
    x = 119,578.29

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1.5x scale

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.