Home / 145,838.85-218,418.36-140,787.79

Finding the Fourth Proportional to 145,838.85, 218,418.36 and 140,787.79

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Solution

The fourth proportional to 145,838.85, 218,418.36 and 140,787.79 is: 210,853.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,838.85 : 218,418.36 = 140,787.79 : x
  2. Step 2: Convert to fraction form
    145,838.85/218,418.36 = 140,787.79/x
  3. Step 3: Cross multiply
    145,838.85x = 218,418.36 × 140,787.79
  4. Step 4: Simplify right side
    145,838.85x = 30,750,637,653.78
  5. Step 5: Solve for x
    x = 30,750,637,653.78/145,838.85
  6. Step 6: Final answer
    x = 210,853.54

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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.