Home / 123,787.78-170,831.23-70,071.68

Finding the Fourth Proportional to 123,787.78, 170,831.23 and 70,071.68

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Solution

The fourth proportional to 123,787.78, 170,831.23 and 70,071.68 is: 96,701.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,787.78 : 170,831.23 = 70,071.68 : x
  2. Step 2: Convert to fraction form
    123,787.78/170,831.23 = 70,071.68/x
  3. Step 3: Cross multiply
    123,787.78x = 170,831.23 × 70,071.68
  4. Step 4: Simplify right side
    123,787.78x = 11,970,431,534.47
  5. Step 5: Solve for x
    x = 11,970,431,534.47/123,787.78
  6. Step 6: Final answer
    x = 96,701.24

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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.