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Finding the Fourth Proportional to 106,544.10, 147,086.15 and 77,831.54

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Solution

The fourth proportional to 106,544.10, 147,086.15 and 77,831.54 is: 107,447.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,544.10 : 147,086.15 = 77,831.54 : x
  2. Step 2: Convert to fraction form
    106,544.10/147,086.15 = 77,831.54/x
  3. Step 3: Cross multiply
    106,544.10x = 147,086.15 × 77,831.54
  4. Step 4: Simplify right side
    106,544.10x = 11,447,940,442.58
  5. Step 5: Solve for x
    x = 11,447,940,442.58/106,544.10
  6. Step 6: Final answer
    x = 107,447.91

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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.