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Finding the Fourth Proportional to 99,663.58, 137,536.81 and 54,341.18

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Solution

The fourth proportional to 99,663.58, 137,536.81 and 54,341.18 is: 74,991.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,663.58 : 137,536.81 = 54,341.18 : x
  2. Step 2: Convert to fraction form
    99,663.58/137,536.81 = 54,341.18/x
  3. Step 3: Cross multiply
    99,663.58x = 137,536.81 × 54,341.18
  4. Step 4: Simplify right side
    99,663.58x = 7,473,912,548.84
  5. Step 5: Solve for x
    x = 7,473,912,548.84/99,663.58
  6. Step 6: Final answer
    x = 74,991.41

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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.