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Finding the Fourth Proportional to 127,403.20, 175,812.64 and 70,811.20

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Solution

The fourth proportional to 127,403.20, 175,812.64 and 70,811.20 is: 97,717.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,403.20 : 175,812.64 = 70,811.20 : x
  2. Step 2: Convert to fraction form
    127,403.20/175,812.64 = 70,811.20/x
  3. Step 3: Cross multiply
    127,403.20x = 175,812.64 × 70,811.20
  4. Step 4: Simplify right side
    127,403.20x = 12,449,504,013.57
  5. Step 5: Solve for x
    x = 12,449,504,013.57/127,403.20
  6. Step 6: Final answer
    x = 97,717.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.