Home / 145,531.64-200,833.36-81,869.49

Finding the Fourth Proportional to 145,531.64, 200,833.36 and 81,869.49

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Solution

The fourth proportional to 145,531.64, 200,833.36 and 81,869.49 is: 112,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,531.64 : 200,833.36 = 81,869.49 : x
  2. Step 2: Convert to fraction form
    145,531.64/200,833.36 = 81,869.49/x
  3. Step 3: Cross multiply
    145,531.64x = 200,833.36 × 81,869.49
  4. Step 4: Simplify right side
    145,531.64x = 16,442,124,758.19
  5. Step 5: Solve for x
    x = 16,442,124,758.19/145,531.64
  6. Step 6: Final answer
    x = 112,979.73

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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.