Home / 120,851.33-181,280.57-57,678.10

Finding the Fourth Proportional to 120,851.33, 181,280.57 and 57,678.10

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Solution

The fourth proportional to 120,851.33, 181,280.57 and 57,678.10 is: 86,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,851.33 : 181,280.57 = 57,678.10 : x
  2. Step 2: Convert to fraction form
    120,851.33/181,280.57 = 57,678.10/x
  3. Step 3: Cross multiply
    120,851.33x = 181,280.57 × 57,678.10
  4. Step 4: Simplify right side
    120,851.33x = 10,455,918,102.93
  5. Step 5: Solve for x
    x = 10,455,918,102.93/120,851.33
  6. Step 6: Final answer
    x = 86,518.85

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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.