Home / 135,328.15-186,770.29-81,642.16

Finding the Fourth Proportional to 135,328.15, 186,770.29 and 81,642.16

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Solution

The fourth proportional to 135,328.15, 186,770.29 and 81,642.16 is: 112,676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,328.15 : 186,770.29 = 81,642.16 : x
  2. Step 2: Convert to fraction form
    135,328.15/186,770.29 = 81,642.16/x
  3. Step 3: Cross multiply
    135,328.15x = 186,770.29 × 81,642.16
  4. Step 4: Simplify right side
    135,328.15x = 15,248,328,965.58
  5. Step 5: Solve for x
    x = 15,248,328,965.58/135,328.15
  6. Step 6: Final answer
    x = 112,676.70

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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.