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Finding the Fourth Proportional to 101,267.52, 139,551.84 and 72,919.68

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Solution

The fourth proportional to 101,267.52, 139,551.84 and 72,919.68 is: 100,487.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,267.52 : 139,551.84 = 72,919.68 : x
  2. Step 2: Convert to fraction form
    101,267.52/139,551.84 = 72,919.68/x
  3. Step 3: Cross multiply
    101,267.52x = 139,551.84 × 72,919.68
  4. Step 4: Simplify right side
    101,267.52x = 10,176,075,516.21
  5. Step 5: Solve for x
    x = 10,176,075,516.21/101,267.52
  6. Step 6: Final answer
    x = 100,487.06

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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.