Home / 123,734.80-170,744.62-72,749.60

Finding the Fourth Proportional to 123,734.80, 170,744.62 and 72,749.60

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Solution

The fourth proportional to 123,734.80, 170,744.62 and 72,749.60 is: 100,388.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,734.80 : 170,744.62 = 72,749.60 : x
  2. Step 2: Convert to fraction form
    123,734.80/170,744.62 = 72,749.60/x
  3. Step 3: Cross multiply
    123,734.80x = 170,744.62 × 72,749.60
  4. Step 4: Simplify right side
    123,734.80x = 12,421,602,807.15
  5. Step 5: Solve for x
    x = 12,421,602,807.15/123,734.80
  6. Step 6: Final answer
    x = 100,388.92

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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.