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Finding the Fourth Proportional to 155,959.20, 233,785.20 and 77,085.60

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Solution

The fourth proportional to 155,959.20, 233,785.20 and 77,085.60 is: 115,552.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,959.20 : 233,785.20 = 77,085.60 : x
  2. Step 2: Convert to fraction form
    155,959.20/233,785.20 = 77,085.60/x
  3. Step 3: Cross multiply
    155,959.20x = 233,785.20 × 77,085.60
  4. Step 4: Simplify right side
    155,959.20x = 18,021,472,413.12
  5. Step 5: Solve for x
    x = 18,021,472,413.12/155,959.20
  6. Step 6: Final answer
    x = 115,552.48

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1.5x scale

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.