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Finding the Fourth Proportional to 158,762.72, 219,095.15 and 87,149.41

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Solution

The fourth proportional to 158,762.72, 219,095.15 and 87,149.41 is: 120,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,762.72 : 219,095.15 = 87,149.41 : x
  2. Step 2: Convert to fraction form
    158,762.72/219,095.15 = 87,149.41/x
  3. Step 3: Cross multiply
    158,762.72x = 219,095.15 × 87,149.41
  4. Step 4: Simplify right side
    158,762.72x = 19,094,012,072.88
  5. Step 5: Solve for x
    x = 19,094,012,072.88/158,762.72
  6. Step 6: Final answer
    x = 120,267.60

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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.