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Finding the Fourth Proportional to 158,879.16, 219,253.20 and 87,259.20

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Solution

The fourth proportional to 158,879.16, 219,253.20 and 87,259.20 is: 120,417.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,879.16 : 219,253.20 = 87,259.20 : x
  2. Step 2: Convert to fraction form
    158,879.16/219,253.20 = 87,259.20/x
  3. Step 3: Cross multiply
    158,879.16x = 219,253.20 × 87,259.20
  4. Step 4: Simplify right side
    158,879.16x = 19,131,858,829.44
  5. Step 5: Solve for x
    x = 19,131,858,829.44/158,879.16
  6. Step 6: Final answer
    x = 120,417.67

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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.