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Finding the Fourth Proportional to 120,006.78, 180,010.13 and 35,764.76

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Solution

The fourth proportional to 120,006.78, 180,010.13 and 35,764.76 is: 53,647.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,006.78 : 180,010.13 = 35,764.76 : x
  2. Step 2: Convert to fraction form
    120,006.78/180,010.13 = 35,764.76/x
  3. Step 3: Cross multiply
    120,006.78x = 180,010.13 × 35,764.76
  4. Step 4: Simplify right side
    120,006.78x = 6,438,018,018.14
  5. Step 5: Solve for x
    x = 6,438,018,018.14/120,006.78
  6. Step 6: Final answer
    x = 53,647.12

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1.5x scale

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.