Home / 158,220.34-218,342.22-85,621.55

Finding the Fourth Proportional to 158,220.34, 218,342.22 and 85,621.55

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Solution

The fourth proportional to 158,220.34, 218,342.22 and 85,621.55 is: 118,156.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,220.34 : 218,342.22 = 85,621.55 : x
  2. Step 2: Convert to fraction form
    158,220.34/218,342.22 = 85,621.55/x
  3. Step 3: Cross multiply
    158,220.34x = 218,342.22 × 85,621.55
  4. Step 4: Simplify right side
    158,220.34x = 18,694,798,601.62
  5. Step 5: Solve for x
    x = 18,694,798,601.62/158,220.34
  6. Step 6: Final answer
    x = 118,156.74

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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.