Home / 103,878.87-143,352.89-56,132.22

Finding the Fourth Proportional to 103,878.87, 143,352.89 and 56,132.22

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Solution

The fourth proportional to 103,878.87, 143,352.89 and 56,132.22 is: 77,462.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,878.87 : 143,352.89 = 56,132.22 : x
  2. Step 2: Convert to fraction form
    103,878.87/143,352.89 = 56,132.22/x
  3. Step 3: Cross multiply
    103,878.87x = 143,352.89 × 56,132.22
  4. Step 4: Simplify right side
    103,878.87x = 8,046,715,959.12
  5. Step 5: Solve for x
    x = 8,046,715,959.12/103,878.87
  6. Step 6: Final answer
    x = 77,462.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.