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Finding the Fourth Proportional to 159,530.72, 239,206.80 and 74,050.40

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Solution

The fourth proportional to 159,530.72, 239,206.80 and 74,050.40 is: 111,034.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,530.72 : 239,206.80 = 74,050.40 : x
  2. Step 2: Convert to fraction form
    159,530.72/239,206.80 = 74,050.40/x
  3. Step 3: Cross multiply
    159,530.72x = 239,206.80 × 74,050.40
  4. Step 4: Simplify right side
    159,530.72x = 17,713,359,222.72
  5. Step 5: Solve for x
    x = 17,713,359,222.72/159,530.72
  6. Step 6: Final answer
    x = 111,034.16

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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.