Home / 153,998.16-212,515.20-86,016.12

Finding the Fourth Proportional to 153,998.16, 212,515.20 and 86,016.12

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Solution

The fourth proportional to 153,998.16, 212,515.20 and 86,016.12 is: 118,700.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,998.16 : 212,515.20 = 86,016.12 : x
  2. Step 2: Convert to fraction form
    153,998.16/212,515.20 = 86,016.12/x
  3. Step 3: Cross multiply
    153,998.16x = 212,515.20 × 86,016.12
  4. Step 4: Simplify right side
    153,998.16x = 18,279,732,945.02
  5. Step 5: Solve for x
    x = 18,279,732,945.02/153,998.16
  6. Step 6: Final answer
    x = 118,700.98

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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.