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Finding the Fourth Proportional to 159,060.36, 219,503.22 and 87,445

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Solution

The fourth proportional to 159,060.36, 219,503.22 and 87,445 is: 120,674.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,060.36 : 219,503.22 = 87,445 : x
  2. Step 2: Convert to fraction form
    159,060.36/219,503.22 = 87,445/x
  3. Step 3: Cross multiply
    159,060.36x = 219,503.22 × 87,445
  4. Step 4: Simplify right side
    159,060.36x = 19,194,459,072.90
  5. Step 5: Solve for x
    x = 19,194,459,072.90/159,060.36
  6. Step 6: Final answer
    x = 120,674.06

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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.