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Finding the Fourth Proportional to 127,101.42, 175,399.43 and 70,512.80

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Solution

The fourth proportional to 127,101.42, 175,399.43 and 70,512.80 is: 97,307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,101.42 : 175,399.43 = 70,512.80 : x
  2. Step 2: Convert to fraction form
    127,101.42/175,399.43 = 70,512.80/x
  3. Step 3: Cross multiply
    127,101.42x = 175,399.43 × 70,512.80
  4. Step 4: Simplify right side
    127,101.42x = 12,367,903,698.14
  5. Step 5: Solve for x
    x = 12,367,903,698.14/127,101.42
  6. Step 6: Final answer
    x = 97,307.36

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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.