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Finding the Fourth Proportional to 140,075.68, 209,021.00 and 124,979.01

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Solution

The fourth proportional to 140,075.68, 209,021.00 and 124,979.01 is: 186,493.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,075.68 : 209,021.00 = 124,979.01 : x
  2. Step 2: Convert to fraction form
    140,075.68/209,021.00 = 124,979.01/x
  3. Step 3: Cross multiply
    140,075.68x = 209,021.00 × 124,979.01
  4. Step 4: Simplify right side
    140,075.68x = 26,123,235,979.21
  5. Step 5: Solve for x
    x = 26,123,235,979.21/140,075.68
  6. Step 6: Final answer
    x = 186,493.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.