Home / 142,701.48-212,890.14-131,129.55

Finding the Fourth Proportional to 142,701.48, 212,890.14 and 131,129.55

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Solution

The fourth proportional to 142,701.48, 212,890.14 and 131,129.55 is: 195,626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,701.48 : 212,890.14 = 131,129.55 : x
  2. Step 2: Convert to fraction form
    142,701.48/212,890.14 = 131,129.55/x
  3. Step 3: Cross multiply
    142,701.48x = 212,890.14 × 131,129.55
  4. Step 4: Simplify right side
    142,701.48x = 27,916,188,257.64
  5. Step 5: Solve for x
    x = 27,916,188,257.64/142,701.48
  6. Step 6: Final answer
    x = 195,626.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.