Home / 189,720.62-261,818.21-103,684.93

Finding the Fourth Proportional to 189,720.62, 261,818.21 and 103,684.93

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Solution

The fourth proportional to 189,720.62, 261,818.21 and 103,684.93 is: 143,087.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,720.62 : 261,818.21 = 103,684.93 : x
  2. Step 2: Convert to fraction form
    189,720.62/261,818.21 = 103,684.93/x
  3. Step 3: Cross multiply
    189,720.62x = 261,818.21 × 103,684.93
  4. Step 4: Simplify right side
    189,720.62x = 27,146,602,776.58
  5. Step 5: Solve for x
    x = 27,146,602,776.58/189,720.62
  6. Step 6: Final answer
    x = 143,087.26

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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.