Home / 91,827.40-137,741.10-66,749.80

Finding the Fourth Proportional to 91,827.40, 137,741.10 and 66,749.80

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Solution

The fourth proportional to 91,827.40, 137,741.10 and 66,749.80 is: 100,124.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,827.40 : 137,741.10 = 66,749.80 : x
  2. Step 2: Convert to fraction form
    91,827.40/137,741.10 = 66,749.80/x
  3. Step 3: Cross multiply
    91,827.40x = 137,741.10 × 66,749.80
  4. Step 4: Simplify right side
    91,827.40x = 9,194,190,876.78
  5. Step 5: Solve for x
    x = 9,194,190,876.78/91,827.40
  6. Step 6: Final answer
    x = 100,124.70

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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.