Home / 120,878.42-181,351.65-42,000.62

Finding the Fourth Proportional to 120,878.42, 181,351.65 and 42,000.62

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Solution

The fourth proportional to 120,878.42, 181,351.65 and 42,000.62 is: 63,012.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,878.42 : 181,351.65 = 42,000.62 : x
  2. Step 2: Convert to fraction form
    120,878.42/181,351.65 = 42,000.62/x
  3. Step 3: Cross multiply
    120,878.42x = 181,351.65 × 42,000.62
  4. Step 4: Simplify right side
    120,878.42x = 7,616,881,738.02
  5. Step 5: Solve for x
    x = 7,616,881,738.02/120,878.42
  6. Step 6: Final answer
    x = 63,012.75

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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.