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Finding the Fourth Proportional to 159,440.13, 220,019.07 and 99,009.48

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Solution

The fourth proportional to 159,440.13, 220,019.07 and 99,009.48 is: 136,627.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,440.13 : 220,019.07 = 99,009.48 : x
  2. Step 2: Convert to fraction form
    159,440.13/220,019.07 = 99,009.48/x
  3. Step 3: Cross multiply
    159,440.13x = 220,019.07 × 99,009.48
  4. Step 4: Simplify right side
    159,440.13x = 21,783,973,710.78
  5. Step 5: Solve for x
    x = 21,783,973,710.78/159,440.13
  6. Step 6: Final answer
    x = 136,627.92

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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.