Home / 142,763.70-214,145.55-90,002.10

Finding the Fourth Proportional to 142,763.70, 214,145.55 and 90,002.10

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Solution

The fourth proportional to 142,763.70, 214,145.55 and 90,002.10 is: 135,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,763.70 : 214,145.55 = 90,002.10 : x
  2. Step 2: Convert to fraction form
    142,763.70/214,145.55 = 90,002.10/x
  3. Step 3: Cross multiply
    142,763.70x = 214,145.55 × 90,002.10
  4. Step 4: Simplify right side
    142,763.70x = 19,273,549,205.66
  5. Step 5: Solve for x
    x = 19,273,549,205.66/142,763.70
  6. Step 6: Final answer
    x = 135,003.15

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1.5x scale

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.