Home / 135,465.18-186,933.28-78,101.52

Finding the Fourth Proportional to 135,465.18, 186,933.28 and 78,101.52

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Solution

The fourth proportional to 135,465.18, 186,933.28 and 78,101.52 is: 107,775.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,465.18 : 186,933.28 = 78,101.52 : x
  2. Step 2: Convert to fraction form
    135,465.18/186,933.28 = 78,101.52/x
  3. Step 3: Cross multiply
    135,465.18x = 186,933.28 × 78,101.52
  4. Step 4: Simplify right side
    135,465.18x = 14,599,773,306.59
  5. Step 5: Solve for x
    x = 14,599,773,306.59/135,465.18
  6. Step 6: Final answer
    x = 107,775.10

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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.