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Finding the Fourth Proportional to 127,074.42, 175,362.87 and 70,485.80

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Solution

The fourth proportional to 127,074.42, 175,362.87 and 70,485.80 is: 97,270.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,074.42 : 175,362.87 = 70,485.80 : x
  2. Step 2: Convert to fraction form
    127,074.42/175,362.87 = 70,485.80/x
  3. Step 3: Cross multiply
    127,074.42x = 175,362.87 × 70,485.80
  4. Step 4: Simplify right side
    127,074.42x = 12,360,591,569.75
  5. Step 5: Solve for x
    x = 12,360,591,569.75/127,074.42
  6. Step 6: Final answer
    x = 97,270.49

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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.