Home / 91,743.40-137,615.10-66,730.60

Finding the Fourth Proportional to 91,743.40, 137,615.10 and 66,730.60

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Solution

The fourth proportional to 91,743.40, 137,615.10 and 66,730.60 is: 100,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,743.40 : 137,615.10 = 66,730.60 : x
  2. Step 2: Convert to fraction form
    91,743.40/137,615.10 = 66,730.60/x
  3. Step 3: Cross multiply
    91,743.40x = 137,615.10 × 66,730.60
  4. Step 4: Simplify right side
    91,743.40x = 9,183,138,192.06
  5. Step 5: Solve for x
    x = 9,183,138,192.06/91,743.40
  6. Step 6: Final answer
    x = 100,095.90

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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.