Home / 155,665.10-233,570.55-80,869.70

Finding the Fourth Proportional to 155,665.10, 233,570.55 and 80,869.70

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Solution

The fourth proportional to 155,665.10, 233,570.55 and 80,869.70 is: 121,342.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,665.10 : 233,570.55 = 80,869.70 : x
  2. Step 2: Convert to fraction form
    155,665.10/233,570.55 = 80,869.70/x
  3. Step 3: Cross multiply
    155,665.10x = 233,570.55 × 80,869.70
  4. Step 4: Simplify right side
    155,665.10x = 18,888,780,307.34
  5. Step 5: Solve for x
    x = 18,888,780,307.34/155,665.10
  6. Step 6: Final answer
    x = 121,342.42

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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.