Home / 153,685.11-212,086.38-85,706.38

Finding the Fourth Proportional to 153,685.11, 212,086.38 and 85,706.38

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Solution

The fourth proportional to 153,685.11, 212,086.38 and 85,706.38 is: 118,275.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,685.11 : 212,086.38 = 85,706.38 : x
  2. Step 2: Convert to fraction form
    153,685.11/212,086.38 = 85,706.38/x
  3. Step 3: Cross multiply
    153,685.11x = 212,086.38 × 85,706.38
  4. Step 4: Simplify right side
    153,685.11x = 18,177,155,877.10
  5. Step 5: Solve for x
    x = 18,177,155,877.10/153,685.11
  6. Step 6: Final answer
    x = 118,275.32

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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.