Home / 155,340.59-214,366.80-86,428.52

Finding the Fourth Proportional to 155,340.59, 214,366.80 and 86,428.52

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Solution

The fourth proportional to 155,340.59, 214,366.80 and 86,428.52 is: 119,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,340.59 : 214,366.80 = 86,428.52 : x
  2. Step 2: Convert to fraction form
    155,340.59/214,366.80 = 86,428.52/x
  3. Step 3: Cross multiply
    155,340.59x = 214,366.80 × 86,428.52
  4. Step 4: Simplify right side
    155,340.59x = 18,527,405,317.28
  5. Step 5: Solve for x
    x = 18,527,405,317.28/155,340.59
  6. Step 6: Final answer
    x = 119,269.57

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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.