Home / 170,065.20-255,102-81,328.08

Finding the Fourth Proportional to 170,065.20, 255,102 and 81,328.08

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Solution

The fourth proportional to 170,065.20, 255,102 and 81,328.08 is: 121,994.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,065.20 : 255,102 = 81,328.08 : x
  2. Step 2: Convert to fraction form
    170,065.20/255,102 = 81,328.08/x
  3. Step 3: Cross multiply
    170,065.20x = 255,102 × 81,328.08
  4. Step 4: Simplify right side
    170,065.20x = 20,746,955,864.16
  5. Step 5: Solve for x
    x = 20,746,955,864.16/170,065.20
  6. Step 6: Final answer
    x = 121,994.13

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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.