Home / 135,540.74-187,117.02-105,258.08

Finding the Fourth Proportional to 135,540.74, 187,117.02 and 105,258.08

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Solution

The fourth proportional to 135,540.74, 187,117.02 and 105,258.08 is: 145,311.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,540.74 : 187,117.02 = 105,258.08 : x
  2. Step 2: Convert to fraction form
    135,540.74/187,117.02 = 105,258.08/x
  3. Step 3: Cross multiply
    135,540.74x = 187,117.02 × 105,258.08
  4. Step 4: Simplify right side
    135,540.74x = 19,695,578,260.52
  5. Step 5: Solve for x
    x = 19,695,578,260.52/135,540.74
  6. Step 6: Final answer
    x = 145,311.13

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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.