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Finding the Fourth Proportional to 105,245.40, 158,256.90 and 88,138.20

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Solution

The fourth proportional to 105,245.40, 158,256.90 and 88,138.20 is: 132,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,245.40 : 158,256.90 = 88,138.20 : x
  2. Step 2: Convert to fraction form
    105,245.40/158,256.90 = 88,138.20/x
  3. Step 3: Cross multiply
    105,245.40x = 158,256.90 × 88,138.20
  4. Step 4: Simplify right side
    105,245.40x = 13,948,478,303.58
  5. Step 5: Solve for x
    x = 13,948,478,303.58/105,245.40
  6. Step 6: Final answer
    x = 132,532.90

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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.