Home / 212,769.10-319,038.45-88,122.70

Finding the Fourth Proportional to 212,769.10, 319,038.45 and 88,122.70

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Solution

The fourth proportional to 212,769.10, 319,038.45 and 88,122.70 is: 132,136.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,769.10 : 319,038.45 = 88,122.70 : x
  2. Step 2: Convert to fraction form
    212,769.10/319,038.45 = 88,122.70/x
  3. Step 3: Cross multiply
    212,769.10x = 319,038.45 × 88,122.70
  4. Step 4: Simplify right side
    212,769.10x = 28,114,529,617.82
  5. Step 5: Solve for x
    x = 28,114,529,617.82/212,769.10
  6. Step 6: Final answer
    x = 132,136.34

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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.