Home / 145,821.78-219,520.45-131,157.57

Finding the Fourth Proportional to 145,821.78, 219,520.45 and 131,157.57

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Solution

The fourth proportional to 145,821.78, 219,520.45 and 131,157.57 is: 197,444.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,821.78 : 219,520.45 = 131,157.57 : x
  2. Step 2: Convert to fraction form
    145,821.78/219,520.45 = 131,157.57/x
  3. Step 3: Cross multiply
    145,821.78x = 219,520.45 × 131,157.57
  4. Step 4: Simplify right side
    145,821.78x = 28,791,768,787.31
  5. Step 5: Solve for x
    x = 28,791,768,787.31/145,821.78
  6. Step 6: Final answer
    x = 197,444.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.