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Finding the Fourth Proportional to 101,666.50, 140,266.16 and 61,364.96

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Solution

The fourth proportional to 101,666.50, 140,266.16 and 61,364.96 is: 84,663.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,666.50 : 140,266.16 = 61,364.96 : x
  2. Step 2: Convert to fraction form
    101,666.50/140,266.16 = 61,364.96/x
  3. Step 3: Cross multiply
    101,666.50x = 140,266.16 × 61,364.96
  4. Step 4: Simplify right side
    101,666.50x = 8,607,427,297.75
  5. Step 5: Solve for x
    x = 8,607,427,297.75/101,666.50
  6. Step 6: Final answer
    x = 84,663.36

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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.