Home / 189,147.17-261,023.46-103,106.86

Finding the Fourth Proportional to 189,147.17, 261,023.46 and 103,106.86

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Solution

The fourth proportional to 189,147.17, 261,023.46 and 103,106.86 is: 142,287.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,147.17 : 261,023.46 = 103,106.86 : x
  2. Step 2: Convert to fraction form
    189,147.17/261,023.46 = 103,106.86/x
  3. Step 3: Cross multiply
    189,147.17x = 261,023.46 × 103,106.86
  4. Step 4: Simplify right side
    189,147.17x = 26,913,308,307.73
  5. Step 5: Solve for x
    x = 26,913,308,307.73/189,147.17
  6. Step 6: Final answer
    x = 142,287.66

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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.