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Finding the Fourth Proportional to 100,032.80, 140,279.20 and 100,032.80

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Solution

The fourth proportional to 100,032.80, 140,279.20 and 100,032.80 is: 140,279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,032.80 : 140,279.20 = 100,032.80 : x
  2. Step 2: Convert to fraction form
    100,032.80/140,279.20 = 100,032.80/x
  3. Step 3: Cross multiply
    100,032.80x = 140,279.20 × 100,032.80
  4. Step 4: Simplify right side
    100,032.80x = 14,032,521,157.76
  5. Step 5: Solve for x
    x = 14,032,521,157.76/100,032.80
  6. Step 6: Final answer
    x = 140,279.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.