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Finding the Fourth Proportional to 108,861.99, 163,303.31 and 42,307.26

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Solution

The fourth proportional to 108,861.99, 163,303.31 and 42,307.26 is: 63,464.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,861.99 : 163,303.31 = 42,307.26 : x
  2. Step 2: Convert to fraction form
    108,861.99/163,303.31 = 42,307.26/x
  3. Step 3: Cross multiply
    108,861.99x = 163,303.31 × 42,307.26
  4. Step 4: Simplify right side
    108,861.99x = 6,908,915,595.03
  5. Step 5: Solve for x
    x = 6,908,915,595.03/108,861.99
  6. Step 6: Final answer
    x = 63,464.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.