Home / 151,831.31-209,330.64-103,999.19

Finding the Fourth Proportional to 151,831.31, 209,330.64 and 103,999.19

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Solution

The fourth proportional to 151,831.31, 209,330.64 and 103,999.19 is: 143,384.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,831.31 : 209,330.64 = 103,999.19 : x
  2. Step 2: Convert to fraction form
    151,831.31/209,330.64 = 103,999.19/x
  3. Step 3: Cross multiply
    151,831.31x = 209,330.64 × 103,999.19
  4. Step 4: Simplify right side
    151,831.31x = 21,770,215,955.53
  5. Step 5: Solve for x
    x = 21,770,215,955.53/151,831.31
  6. Step 6: Final answer
    x = 143,384.24

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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.