Home / 128,827.20-193,240.80-91,502.40

Finding the Fourth Proportional to 128,827.20, 193,240.80 and 91,502.40

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Solution

The fourth proportional to 128,827.20, 193,240.80 and 91,502.40 is: 137,253.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,827.20 : 193,240.80 = 91,502.40 : x
  2. Step 2: Convert to fraction form
    128,827.20/193,240.80 = 91,502.40/x
  3. Step 3: Cross multiply
    128,827.20x = 193,240.80 × 91,502.40
  4. Step 4: Simplify right side
    128,827.20x = 17,681,996,977.92
  5. Step 5: Solve for x
    x = 17,681,996,977.92/128,827.20
  6. Step 6: Final answer
    x = 137,253.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.