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Finding the Fourth Proportional to 158,753.10, 219,079.02 and 87,133.32

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Solution

The fourth proportional to 158,753.10, 219,079.02 and 87,133.32 is: 120,243.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,753.10 : 219,079.02 = 87,133.32 : x
  2. Step 2: Convert to fraction form
    158,753.10/219,079.02 = 87,133.32/x
  3. Step 3: Cross multiply
    158,753.10x = 219,079.02 × 87,133.32
  4. Step 4: Simplify right side
    158,753.10x = 19,089,082,354.95
  5. Step 5: Solve for x
    x = 19,089,082,354.95/158,753.10
  6. Step 6: Final answer
    x = 120,243.84

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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.