Home / 155,220.90-232,831.35-128,976.90

Finding the Fourth Proportional to 155,220.90, 232,831.35 and 128,976.90

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Solution

The fourth proportional to 155,220.90, 232,831.35 and 128,976.90 is: 193,465.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,220.90 : 232,831.35 = 128,976.90 : x
  2. Step 2: Convert to fraction form
    155,220.90/232,831.35 = 128,976.90/x
  3. Step 3: Cross multiply
    155,220.90x = 232,831.35 × 128,976.90
  4. Step 4: Simplify right side
    155,220.90x = 30,029,865,745.82
  5. Step 5: Solve for x
    x = 30,029,865,745.82/155,220.90
  6. Step 6: Final answer
    x = 193,465.35

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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.