Home / 157,619.13-217,515.11-86,000.66

Finding the Fourth Proportional to 157,619.13, 217,515.11 and 86,000.66

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Solution

The fourth proportional to 157,619.13, 217,515.11 and 86,000.66 is: 118,681.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,619.13 : 217,515.11 = 86,000.66 : x
  2. Step 2: Convert to fraction form
    157,619.13/217,515.11 = 86,000.66/x
  3. Step 3: Cross multiply
    157,619.13x = 217,515.11 × 86,000.66
  4. Step 4: Simplify right side
    157,619.13x = 18,706,441,502.39
  5. Step 5: Solve for x
    x = 18,706,441,502.39/157,619.13
  6. Step 6: Final answer
    x = 118,681.29

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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.