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Finding the Fourth Proportional to 101,401.08, 139,933.80 and 56,689.08

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Solution

The fourth proportional to 101,401.08, 139,933.80 and 56,689.08 is: 78,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,401.08 : 139,933.80 = 56,689.08 : x
  2. Step 2: Convert to fraction form
    101,401.08/139,933.80 = 56,689.08/x
  3. Step 3: Cross multiply
    101,401.08x = 139,933.80 × 56,689.08
  4. Step 4: Simplify right side
    101,401.08x = 7,932,718,382.90
  5. Step 5: Solve for x
    x = 7,932,718,382.90/101,401.08
  6. Step 6: Final answer
    x = 78,231.10

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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.