Home / 189,411.39-261,389.15-103,371.03

Finding the Fourth Proportional to 189,411.39, 261,389.15 and 103,371.03

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Solution

The fourth proportional to 189,411.39, 261,389.15 and 103,371.03 is: 142,652.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,411.39 : 261,389.15 = 103,371.03 : x
  2. Step 2: Convert to fraction form
    189,411.39/261,389.15 = 103,371.03/x
  3. Step 3: Cross multiply
    189,411.39x = 261,389.15 × 103,371.03
  4. Step 4: Simplify right side
    189,411.39x = 27,020,065,666.32
  5. Step 5: Solve for x
    x = 27,020,065,666.32/189,411.39
  6. Step 6: Final answer
    x = 142,652.80

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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.