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Finding the Fourth Proportional to 101,442.96, 139,992.21 and 56,119.86

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Solution

The fourth proportional to 101,442.96, 139,992.21 and 56,119.86 is: 77,445.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,442.96 : 139,992.21 = 56,119.86 : x
  2. Step 2: Convert to fraction form
    101,442.96/139,992.21 = 56,119.86/x
  3. Step 3: Cross multiply
    101,442.96x = 139,992.21 × 56,119.86
  4. Step 4: Simplify right side
    101,442.96x = 7,856,343,226.29
  5. Step 5: Solve for x
    x = 7,856,343,226.29/101,442.96
  6. Step 6: Final answer
    x = 77,445.92

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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.