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Finding the Fourth Proportional to 159,430.13, 220,023.56 and 87,810.12

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Solution

The fourth proportional to 159,430.13, 220,023.56 and 87,810.12 is: 121,183.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,430.13 : 220,023.56 = 87,810.12 : x
  2. Step 2: Convert to fraction form
    159,430.13/220,023.56 = 87,810.12/x
  3. Step 3: Cross multiply
    159,430.13x = 220,023.56 × 87,810.12
  4. Step 4: Simplify right side
    159,430.13x = 19,320,294,767.38
  5. Step 5: Solve for x
    x = 19,320,294,767.38/159,430.13
  6. Step 6: Final answer
    x = 121,183.46

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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.