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Finding the Fourth Proportional to 153,578.77, 230,399.48 and 87,048.61

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Solution

The fourth proportional to 153,578.77, 230,399.48 and 87,048.61 is: 130,590.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,578.77 : 230,399.48 = 87,048.61 : x
  2. Step 2: Convert to fraction form
    153,578.77/230,399.48 = 87,048.61/x
  3. Step 3: Cross multiply
    153,578.77x = 230,399.48 × 87,048.61
  4. Step 4: Simplify right side
    153,578.77x = 20,055,954,478.72
  5. Step 5: Solve for x
    x = 20,055,954,478.72/153,578.77
  6. Step 6: Final answer
    x = 130,590.67

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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.