Home / 170,712.24-255,942-81,881.16

Finding the Fourth Proportional to 170,712.24, 255,942 and 81,881.16

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Solution

The fourth proportional to 170,712.24, 255,942 and 81,881.16 is: 122,761.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,712.24 : 255,942 = 81,881.16 : x
  2. Step 2: Convert to fraction form
    170,712.24/255,942 = 81,881.16/x
  3. Step 3: Cross multiply
    170,712.24x = 255,942 × 81,881.16
  4. Step 4: Simplify right side
    170,712.24x = 20,956,827,852.72
  5. Step 5: Solve for x
    x = 20,956,827,852.72/170,712.24
  6. Step 6: Final answer
    x = 122,761.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.