Home / 140,434.40-210,691.52-69,378.72

Finding the Fourth Proportional to 140,434.40, 210,691.52 and 69,378.72

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Solution

The fourth proportional to 140,434.40, 210,691.52 and 69,378.72 is: 104,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,434.40 : 210,691.52 = 69,378.72 : x
  2. Step 2: Convert to fraction form
    140,434.40/210,691.52 = 69,378.72/x
  3. Step 3: Cross multiply
    140,434.40x = 210,691.52 × 69,378.72
  4. Step 4: Simplify right side
    140,434.40x = 14,617,507,972.45
  5. Step 5: Solve for x
    x = 14,617,507,972.45/140,434.40
  6. Step 6: Final answer
    x = 104,087.80

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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.