Home / 91,600,118.40-137,400,177.60-87,121,142.40

Finding the Fourth Proportional to 91,600,118.40, 137,400,177.60 and 87,121,142.40

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Solution

The fourth proportional to 91,600,118.40, 137,400,177.60 and 87,121,142.40 is: 130,681,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,600,118.40 : 137,400,177.60 = 87,121,142.40 : x
  2. Step 2: Convert to fraction form
    91,600,118.40/137,400,177.60 = 87,121,142.40/x
  3. Step 3: Cross multiply
    91,600,118.40x = 137,400,177.60 × 87,121,142.40
  4. Step 4: Simplify right side
    91,600,118.40x = 11,970,460,438,474,890
  5. Step 5: Solve for x
    x = 11,970,460,438,474,890/91,600,118.40
  6. Step 6: Final answer
    x = 130,681,713.60

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Similar ratio
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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.