Home / 147,831.31-203,767.54-115,509.43

Finding the Fourth Proportional to 147,831.31, 203,767.54 and 115,509.43

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Solution

The fourth proportional to 147,831.31, 203,767.54 and 115,509.43 is: 159,215.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,831.31 : 203,767.54 = 115,509.43 : x
  2. Step 2: Convert to fraction form
    147,831.31/203,767.54 = 115,509.43/x
  3. Step 3: Cross multiply
    147,831.31x = 203,767.54 × 115,509.43
  4. Step 4: Simplify right side
    147,831.31x = 23,537,072,397.90
  5. Step 5: Solve for x
    x = 23,537,072,397.90/147,831.31
  6. Step 6: Final answer
    x = 159,215.75

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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.