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Finding the Fourth Proportional to 202,437.49, 279,101.68 and 138,661.33

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Solution

The fourth proportional to 202,437.49, 279,101.68 and 138,661.33 is: 191,173.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,437.49 : 279,101.68 = 138,661.33 : x
  2. Step 2: Convert to fraction form
    202,437.49/279,101.68 = 138,661.33/x
  3. Step 3: Cross multiply
    202,437.49x = 279,101.68 × 138,661.33
  4. Step 4: Simplify right side
    202,437.49x = 38,700,610,154.03
  5. Step 5: Solve for x
    x = 38,700,610,154.03/202,437.49
  6. Step 6: Final answer
    x = 191,173.14

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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.