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Finding the Fourth Proportional to 115,501.44, 159,394.32 and 65,190.72

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Solution

The fourth proportional to 115,501.44, 159,394.32 and 65,190.72 is: 89,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,501.44 : 159,394.32 = 65,190.72 : x
  2. Step 2: Convert to fraction form
    115,501.44/159,394.32 = 65,190.72/x
  3. Step 3: Cross multiply
    115,501.44x = 159,394.32 × 65,190.72
  4. Step 4: Simplify right side
    115,501.44x = 10,391,030,484.71
  5. Step 5: Solve for x
    x = 10,391,030,484.71/115,501.44
  6. Step 6: Final answer
    x = 89,964.51

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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.