Home / 109,715.10-151,398.63-61,968.30

Finding the Fourth Proportional to 109,715.10, 151,398.63 and 61,968.30

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Solution

The fourth proportional to 109,715.10, 151,398.63 and 61,968.30 is: 85,511.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,715.10 : 151,398.63 = 61,968.30 : x
  2. Step 2: Convert to fraction form
    109,715.10/151,398.63 = 61,968.30/x
  3. Step 3: Cross multiply
    109,715.10x = 151,398.63 × 61,968.30
  4. Step 4: Simplify right side
    109,715.10x = 9,381,915,723.43
  5. Step 5: Solve for x
    x = 9,381,915,723.43/109,715.10
  6. Step 6: Final answer
    x = 85,511.62

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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.