Home / 91,148.40-136,722.60-28,818.90

Finding the Fourth Proportional to 91,148.40, 136,722.60 and 28,818.90

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Solution

The fourth proportional to 91,148.40, 136,722.60 and 28,818.90 is: 43,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,148.40 : 136,722.60 = 28,818.90 : x
  2. Step 2: Convert to fraction form
    91,148.40/136,722.60 = 28,818.90/x
  3. Step 3: Cross multiply
    91,148.40x = 136,722.60 × 28,818.90
  4. Step 4: Simplify right side
    91,148.40x = 3,940,194,937.14
  5. Step 5: Solve for x
    x = 3,940,194,937.14/91,148.40
  6. Step 6: Final answer
    x = 43,228.35

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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.