Home / 135,434.51-186,837.59-87,703.23

Finding the Fourth Proportional to 135,434.51, 186,837.59 and 87,703.23

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Solution

The fourth proportional to 135,434.51, 186,837.59 and 87,703.23 is: 120,990.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,434.51 : 186,837.59 = 87,703.23 : x
  2. Step 2: Convert to fraction form
    135,434.51/186,837.59 = 87,703.23/x
  3. Step 3: Cross multiply
    135,434.51x = 186,837.59 × 87,703.23
  4. Step 4: Simplify right side
    135,434.51x = 16,386,259,689.90
  5. Step 5: Solve for x
    x = 16,386,259,689.90/135,434.51
  6. Step 6: Final answer
    x = 120,990.29

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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.