Home / 189,711.10-261,801.98-103,670.07

Finding the Fourth Proportional to 189,711.10, 261,801.98 and 103,670.07

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Solution

The fourth proportional to 189,711.10, 261,801.98 and 103,670.07 is: 143,065.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,711.10 : 261,801.98 = 103,670.07 : x
  2. Step 2: Convert to fraction form
    189,711.10/261,801.98 = 103,670.07/x
  3. Step 3: Cross multiply
    189,711.10x = 261,801.98 × 103,670.07
  4. Step 4: Simplify right side
    189,711.10x = 27,141,029,592.74
  5. Step 5: Solve for x
    x = 27,141,029,592.74/189,711.10
  6. Step 6: Final answer
    x = 143,065.06

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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.