Home / 153,917.40-230,438.70-136,421.40

Finding the Fourth Proportional to 153,917.40, 230,438.70 and 136,421.40

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Solution

The fourth proportional to 153,917.40, 230,438.70 and 136,421.40 is: 204,244.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,917.40 : 230,438.70 = 136,421.40 : x
  2. Step 2: Convert to fraction form
    153,917.40/230,438.70 = 136,421.40/x
  3. Step 3: Cross multiply
    153,917.40x = 230,438.70 × 136,421.40
  4. Step 4: Simplify right side
    153,917.40x = 31,436,770,068.18
  5. Step 5: Solve for x
    x = 31,436,770,068.18/153,917.40
  6. Step 6: Final answer
    x = 204,244.42

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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.