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Finding the Fourth Proportional to 101,073.16, 139,484.32 and 55,135.32

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Solution

The fourth proportional to 101,073.16, 139,484.32 and 55,135.32 is: 76,088.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,073.16 : 139,484.32 = 55,135.32 : x
  2. Step 2: Convert to fraction form
    101,073.16/139,484.32 = 55,135.32/x
  3. Step 3: Cross multiply
    101,073.16x = 139,484.32 × 55,135.32
  4. Step 4: Simplify right side
    101,073.16x = 7,690,512,618.18
  5. Step 5: Solve for x
    x = 7,690,512,618.18/101,073.16
  6. Step 6: Final answer
    x = 76,088.57

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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.