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Finding the Fourth Proportional to 100,063.05, 138,088.10 and 54,740.06

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Solution

The fourth proportional to 100,063.05, 138,088.10 and 54,740.06 is: 75,541.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,063.05 : 138,088.10 = 54,740.06 : x
  2. Step 2: Convert to fraction form
    100,063.05/138,088.10 = 54,740.06/x
  3. Step 3: Cross multiply
    100,063.05x = 138,088.10 × 54,740.06
  4. Step 4: Simplify right side
    100,063.05x = 7,558,950,879.29
  5. Step 5: Solve for x
    x = 7,558,950,879.29/100,063.05
  6. Step 6: Final answer
    x = 75,541.88

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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.