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Finding the Fourth Proportional to 114,290.20, 171,143.70 and 90,962.20

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Solution

The fourth proportional to 114,290.20, 171,143.70 and 90,962.20 is: 136,211.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,290.20 : 171,143.70 = 90,962.20 : x
  2. Step 2: Convert to fraction form
    114,290.20/171,143.70 = 90,962.20/x
  3. Step 3: Cross multiply
    114,290.20x = 171,143.70 × 90,962.20
  4. Step 4: Simplify right side
    114,290.20x = 15,567,607,468.14
  5. Step 5: Solve for x
    x = 15,567,607,468.14/114,290.20
  6. Step 6: Final answer
    x = 136,211.22

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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.