Home / 99,831.51-137,766.43-54,509.35

Finding the Fourth Proportional to 99,831.51, 137,766.43 and 54,509.35

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Solution

The fourth proportional to 99,831.51, 137,766.43 and 54,509.35 is: 75,222.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,831.51 : 137,766.43 = 54,509.35 : x
  2. Step 2: Convert to fraction form
    99,831.51/137,766.43 = 54,509.35/x
  3. Step 3: Cross multiply
    99,831.51x = 137,766.43 × 54,509.35
  4. Step 4: Simplify right side
    99,831.51x = 7,509,558,278.57
  5. Step 5: Solve for x
    x = 7,509,558,278.57/99,831.51
  6. Step 6: Final answer
    x = 75,222.32

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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.