Home / 158,154.02-218,255.28-86,540.30

Finding the Fourth Proportional to 158,154.02, 218,255.28 and 86,540.30

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Solution

The fourth proportional to 158,154.02, 218,255.28 and 86,540.30 is: 119,427.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,154.02 : 218,255.28 = 86,540.30 : x
  2. Step 2: Convert to fraction form
    158,154.02/218,255.28 = 86,540.30/x
  3. Step 3: Cross multiply
    158,154.02x = 218,255.28 × 86,540.30
  4. Step 4: Simplify right side
    158,154.02x = 18,887,877,407.78
  5. Step 5: Solve for x
    x = 18,887,877,407.78/158,154.02
  6. Step 6: Final answer
    x = 119,427.11

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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.