Home / 158,134.10-218,230.25-86,512.47

Finding the Fourth Proportional to 158,134.10, 218,230.25 and 86,512.47

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Solution

The fourth proportional to 158,134.10, 218,230.25 and 86,512.47 is: 119,390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,134.10 : 218,230.25 = 86,512.47 : x
  2. Step 2: Convert to fraction form
    158,134.10/218,230.25 = 86,512.47/x
  3. Step 3: Cross multiply
    158,134.10x = 218,230.25 × 86,512.47
  4. Step 4: Simplify right side
    158,134.10x = 18,879,637,523.66
  5. Step 5: Solve for x
    x = 18,879,637,523.66/158,134.10
  6. Step 6: Final answer
    x = 119,390.05

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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.