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Finding the Fourth Proportional to 101,119.68, 139,545 and 55,797.63

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Solution

The fourth proportional to 101,119.68, 139,545 and 55,797.63 is: 77,000.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,119.68 : 139,545 = 55,797.63 : x
  2. Step 2: Convert to fraction form
    101,119.68/139,545 = 55,797.63/x
  3. Step 3: Cross multiply
    101,119.68x = 139,545 × 55,797.63
  4. Step 4: Simplify right side
    101,119.68x = 7,786,280,278.35
  5. Step 5: Solve for x
    x = 7,786,280,278.35/101,119.68
  6. Step 6: Final answer
    x = 77,000.64

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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.