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Finding the Fourth Proportional to 101,442.17, 139,994.34 and 56,119.39

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Solution

The fourth proportional to 101,442.17, 139,994.34 and 56,119.39 is: 77,447.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,442.17 : 139,994.34 = 56,119.39 : x
  2. Step 2: Convert to fraction form
    101,442.17/139,994.34 = 56,119.39/x
  3. Step 3: Cross multiply
    101,442.17x = 139,994.34 × 56,119.39
  4. Step 4: Simplify right side
    101,442.17x = 7,856,396,264.28
  5. Step 5: Solve for x
    x = 7,856,396,264.28/101,442.17
  6. Step 6: Final answer
    x = 77,447.04

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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.