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Finding the Fourth Proportional to 188,697.52, 260,395.50 and 103,814.20

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Solution

The fourth proportional to 188,697.52, 260,395.50 and 103,814.20 is: 143,259.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,697.52 : 260,395.50 = 103,814.20 : x
  2. Step 2: Convert to fraction form
    188,697.52/260,395.50 = 103,814.20/x
  3. Step 3: Cross multiply
    188,697.52x = 260,395.50 × 103,814.20
  4. Step 4: Simplify right side
    188,697.52x = 27,032,750,516.10
  5. Step 5: Solve for x
    x = 27,032,750,516.10/188,697.52
  6. Step 6: Final answer
    x = 143,259.70

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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.