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Finding the Fourth Proportional to 114,280.20, 171,128.70 and 90,952.20

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Solution

The fourth proportional to 114,280.20, 171,128.70 and 90,952.20 is: 136,196.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,280.20 : 171,128.70 = 90,952.20 : x
  2. Step 2: Convert to fraction form
    114,280.20/171,128.70 = 90,952.20/x
  3. Step 3: Cross multiply
    114,280.20x = 171,128.70 × 90,952.20
  4. Step 4: Simplify right side
    114,280.20x = 15,564,531,748.14
  5. Step 5: Solve for x
    x = 15,564,531,748.14/114,280.20
  6. Step 6: Final answer
    x = 136,196.22

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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.