Home / 155,386.80-232,578.84-80,403.72

Finding the Fourth Proportional to 155,386.80, 232,578.84 and 80,403.72

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Solution

The fourth proportional to 155,386.80, 232,578.84 and 80,403.72 is: 120,346.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,386.80 : 232,578.84 = 80,403.72 : x
  2. Step 2: Convert to fraction form
    155,386.80/232,578.84 = 80,403.72/x
  3. Step 3: Cross multiply
    155,386.80x = 232,578.84 × 80,403.72
  4. Step 4: Simplify right side
    155,386.80x = 18,700,203,929.28
  5. Step 5: Solve for x
    x = 18,700,203,929.28/155,386.80
  6. Step 6: Final answer
    x = 120,346.16

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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.