Home / 99,831.82-137,768.21-54,510.20

Finding the Fourth Proportional to 99,831.82, 137,768.21 and 54,510.20

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Solution

The fourth proportional to 99,831.82, 137,768.21 and 54,510.20 is: 75,224.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,831.82 : 137,768.21 = 54,510.20 : x
  2. Step 2: Convert to fraction form
    99,831.82/137,768.21 = 54,510.20/x
  3. Step 3: Cross multiply
    99,831.82x = 137,768.21 × 54,510.20
  4. Step 4: Simplify right side
    99,831.82x = 7,509,772,680.74
  5. Step 5: Solve for x
    x = 7,509,772,680.74/99,831.82
  6. Step 6: Final answer
    x = 75,224.24

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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.