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Finding the Fourth Proportional to 188,710.61, 260,426.87 and 108,153.57

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Solution

The fourth proportional to 188,710.61, 260,426.87 and 108,153.57 is: 149,255.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,710.61 : 260,426.87 = 108,153.57 : x
  2. Step 2: Convert to fraction form
    188,710.61/260,426.87 = 108,153.57/x
  3. Step 3: Cross multiply
    188,710.61x = 260,426.87 × 108,153.57
  4. Step 4: Simplify right side
    188,710.61x = 28,166,096,555.83
  5. Step 5: Solve for x
    x = 28,166,096,555.83/188,710.61
  6. Step 6: Final answer
    x = 149,255.50

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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.