Home / 128,681.40-193,061.16-62,109.12

Finding the Fourth Proportional to 128,681.40, 193,061.16 and 62,109.12

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Solution

The fourth proportional to 128,681.40, 193,061.16 and 62,109.12 is: 93,182.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,681.40 : 193,061.16 = 62,109.12 : x
  2. Step 2: Convert to fraction form
    128,681.40/193,061.16 = 62,109.12/x
  3. Step 3: Cross multiply
    128,681.40x = 193,061.16 × 62,109.12
  4. Step 4: Simplify right side
    128,681.40x = 11,990,858,753.78
  5. Step 5: Solve for x
    x = 11,990,858,753.78/128,681.40
  6. Step 6: Final answer
    x = 93,182.53

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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.