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Finding the Fourth Proportional to 123,538.60, 185,307.90 and 121,570.30

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Solution

The fourth proportional to 123,538.60, 185,307.90 and 121,570.30 is: 182,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,538.60 : 185,307.90 = 121,570.30 : x
  2. Step 2: Convert to fraction form
    123,538.60/185,307.90 = 121,570.30/x
  3. Step 3: Cross multiply
    123,538.60x = 185,307.90 × 121,570.30
  4. Step 4: Simplify right side
    123,538.60x = 22,527,936,995.37
  5. Step 5: Solve for x
    x = 22,527,936,995.37/123,538.60
  6. Step 6: Final answer
    x = 182,355.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.