Home / 120,878.17-181,351.28-42,000.37

Finding the Fourth Proportional to 120,878.17, 181,351.28 and 42,000.37

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Solution

The fourth proportional to 120,878.17, 181,351.28 and 42,000.37 is: 63,012.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,878.17 : 181,351.28 = 42,000.37 : x
  2. Step 2: Convert to fraction form
    120,878.17/181,351.28 = 42,000.37/x
  3. Step 3: Cross multiply
    120,878.17x = 181,351.28 × 42,000.37
  4. Step 4: Simplify right side
    120,878.17x = 7,616,820,649.97
  5. Step 5: Solve for x
    x = 7,616,820,649.97/120,878.17
  6. Step 6: Final answer
    x = 63,012.38

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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.