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Finding the Fourth Proportional to 189,303.67, 261,212.21 and 117,657.55

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Solution

The fourth proportional to 189,303.67, 261,212.21 and 117,657.55 is: 162,350.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,303.67 : 261,212.21 = 117,657.55 : x
  2. Step 2: Convert to fraction form
    189,303.67/261,212.21 = 117,657.55/x
  3. Step 3: Cross multiply
    189,303.67x = 261,212.21 × 117,657.55
  4. Step 4: Simplify right side
    189,303.67x = 30,733,588,070.40
  5. Step 5: Solve for x
    x = 30,733,588,070.40/189,303.67
  6. Step 6: Final answer
    x = 162,350.73

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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.