Home / 105,449.30-145,520.01-57,702.63

Finding the Fourth Proportional to 105,449.30, 145,520.01 and 57,702.63

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Solution

The fourth proportional to 105,449.30, 145,520.01 and 57,702.63 is: 79,629.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,449.30 : 145,520.01 = 57,702.63 : x
  2. Step 2: Convert to fraction form
    105,449.30/145,520.01 = 57,702.63/x
  3. Step 3: Cross multiply
    105,449.30x = 145,520.01 × 57,702.63
  4. Step 4: Simplify right side
    105,449.30x = 8,396,887,294.63
  5. Step 5: Solve for x
    x = 8,396,887,294.63/105,449.30
  6. Step 6: Final answer
    x = 79,629.62

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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.