Home / 109,657.13-164,189.97-71,612.17

Finding the Fourth Proportional to 109,657.13, 164,189.97 and 71,612.17

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Solution

The fourth proportional to 109,657.13, 164,189.97 and 71,612.17 is: 107,225.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,657.13 : 164,189.97 = 71,612.17 : x
  2. Step 2: Convert to fraction form
    109,657.13/164,189.97 = 71,612.17/x
  3. Step 3: Cross multiply
    109,657.13x = 164,189.97 × 71,612.17
  4. Step 4: Simplify right side
    109,657.13x = 11,757,999,633.46
  5. Step 5: Solve for x
    x = 11,757,999,633.46/109,657.13
  6. Step 6: Final answer
    x = 107,225.13

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1.5x scale

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.