Home / 159,430.20-220,015.08-87,812.70

Finding the Fourth Proportional to 159,430.20, 220,015.08 and 87,812.70

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Solution

The fourth proportional to 159,430.20, 220,015.08 and 87,812.70 is: 121,182.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,430.20 : 220,015.08 = 87,812.70 : x
  2. Step 2: Convert to fraction form
    159,430.20/220,015.08 = 87,812.70/x
  3. Step 3: Cross multiply
    159,430.20x = 220,015.08 × 87,812.70
  4. Step 4: Simplify right side
    159,430.20x = 19,320,118,215.52
  5. Step 5: Solve for x
    x = 19,320,118,215.52/159,430.20
  6. Step 6: Final answer
    x = 121,182.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.