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Finding the Fourth Proportional to 155,750.40, 233,740.80 and 103,142.40

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Solution

The fourth proportional to 155,750.40, 233,740.80 and 103,142.40 is: 154,789.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,750.40 : 233,740.80 = 103,142.40 : x
  2. Step 2: Convert to fraction form
    155,750.40/233,740.80 = 103,142.40/x
  3. Step 3: Cross multiply
    155,750.40x = 233,740.80 × 103,142.40
  4. Step 4: Simplify right side
    155,750.40x = 24,108,587,089.92
  5. Step 5: Solve for x
    x = 24,108,587,089.92/155,750.40
  6. Step 6: Final answer
    x = 154,789.89

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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.