Home / 153,782.28-212,240.74-90,145.48

Finding the Fourth Proportional to 153,782.28, 212,240.74 and 90,145.48

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Solution

The fourth proportional to 153,782.28, 212,240.74 and 90,145.48 is: 124,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,782.28 : 212,240.74 = 90,145.48 : x
  2. Step 2: Convert to fraction form
    153,782.28/212,240.74 = 90,145.48/x
  3. Step 3: Cross multiply
    153,782.28x = 212,240.74 × 90,145.48
  4. Step 4: Simplify right side
    153,782.28x = 19,132,543,382.86
  5. Step 5: Solve for x
    x = 19,132,543,382.86/153,782.28
  6. Step 6: Final answer
    x = 124,413.19

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1.5x scale

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.