Home / 100,290.43-138,382.64-64,472.23

Finding the Fourth Proportional to 100,290.43, 138,382.64 and 64,472.23

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Solution

The fourth proportional to 100,290.43, 138,382.64 and 64,472.23 is: 88,960.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,290.43 : 138,382.64 = 64,472.23 : x
  2. Step 2: Convert to fraction form
    100,290.43/138,382.64 = 64,472.23/x
  3. Step 3: Cross multiply
    100,290.43x = 138,382.64 × 64,472.23
  4. Step 4: Simplify right side
    100,290.43x = 8,921,836,702.17
  5. Step 5: Solve for x
    x = 8,921,836,702.17/100,290.43
  6. Step 6: Final answer
    x = 88,960.00

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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.