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Finding the Fourth Proportional to 127,552.80, 191,329.20 and 80,858.40

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Solution

The fourth proportional to 127,552.80, 191,329.20 and 80,858.40 is: 121,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,552.80 : 191,329.20 = 80,858.40 : x
  2. Step 2: Convert to fraction form
    127,552.80/191,329.20 = 80,858.40/x
  3. Step 3: Cross multiply
    127,552.80x = 191,329.20 × 80,858.40
  4. Step 4: Simplify right side
    127,552.80x = 15,470,572,985.28
  5. Step 5: Solve for x
    x = 15,470,572,985.28/127,552.80
  6. Step 6: Final answer
    x = 121,287.60

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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.