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Finding the Fourth Proportional to 127,078.68, 175,365.90 and 70,489.56

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Solution

The fourth proportional to 127,078.68, 175,365.90 and 70,489.56 is: 97,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,078.68 : 175,365.90 = 70,489.56 : x
  2. Step 2: Convert to fraction form
    127,078.68/175,365.90 = 70,489.56/x
  3. Step 3: Cross multiply
    127,078.68x = 175,365.90 × 70,489.56
  4. Step 4: Simplify right side
    127,078.68x = 12,361,465,130.00
  5. Step 5: Solve for x
    x = 12,361,465,130.00/127,078.68
  6. Step 6: Final answer
    x = 97,274.11

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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.