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Finding the Fourth Proportional to 108,967.64, 163,437.06 and 42,428.12

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Solution

The fourth proportional to 108,967.64, 163,437.06 and 42,428.12 is: 63,636.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,967.64 : 163,437.06 = 42,428.12 : x
  2. Step 2: Convert to fraction form
    108,967.64/163,437.06 = 42,428.12/x
  3. Step 3: Cross multiply
    108,967.64x = 163,437.06 × 42,428.12
  4. Step 4: Simplify right side
    108,967.64x = 6,934,327,194.13
  5. Step 5: Solve for x
    x = 6,934,327,194.13/108,967.64
  6. Step 6: Final answer
    x = 63,636.57

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1.5x scale

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.