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Finding the Fourth Proportional to 101,254.68, 139,727.43 and 55,931.16

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Solution

The fourth proportional to 101,254.68, 139,727.43 and 55,931.16 is: 77,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,254.68 : 139,727.43 = 55,931.16 : x
  2. Step 2: Convert to fraction form
    101,254.68/139,727.43 = 55,931.16/x
  3. Step 3: Cross multiply
    101,254.68x = 139,727.43 × 55,931.16
  4. Step 4: Simplify right side
    101,254.68x = 7,815,116,981.73
  5. Step 5: Solve for x
    x = 7,815,116,981.73/101,254.68
  6. Step 6: Final answer
    x = 77,182.77

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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.