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Finding the Fourth Proportional to 188,502.18, 260,128.44 and 102,459.12

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Solution

The fourth proportional to 188,502.18, 260,128.44 and 102,459.12 is: 141,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,502.18 : 260,128.44 = 102,459.12 : x
  2. Step 2: Convert to fraction form
    188,502.18/260,128.44 = 102,459.12/x
  3. Step 3: Cross multiply
    188,502.18x = 260,128.44 × 102,459.12
  4. Step 4: Simplify right side
    188,502.18x = 26,652,531,049.37
  5. Step 5: Solve for x
    x = 26,652,531,049.37/188,502.18
  6. Step 6: Final answer
    x = 141,391.10

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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.