Home / 158,344.72-218,511.03-86,723.20

Finding the Fourth Proportional to 158,344.72, 218,511.03 and 86,723.20

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Solution

The fourth proportional to 158,344.72, 218,511.03 and 86,723.20 is: 119,675.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,344.72 : 218,511.03 = 86,723.20 : x
  2. Step 2: Convert to fraction form
    158,344.72/218,511.03 = 86,723.20/x
  3. Step 3: Cross multiply
    158,344.72x = 218,511.03 × 86,723.20
  4. Step 4: Simplify right side
    158,344.72x = 18,949,975,756.90
  5. Step 5: Solve for x
    x = 18,949,975,756.90/158,344.72
  6. Step 6: Final answer
    x = 119,675.45

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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.