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Finding the Fourth Proportional to 101,918.70, 140,643.08 and 56,599.56

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Solution

The fourth proportional to 101,918.70, 140,643.08 and 56,599.56 is: 78,104.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,918.70 : 140,643.08 = 56,599.56 : x
  2. Step 2: Convert to fraction form
    101,918.70/140,643.08 = 56,599.56/x
  3. Step 3: Cross multiply
    101,918.70x = 140,643.08 × 56,599.56
  4. Step 4: Simplify right side
    101,918.70x = 7,960,336,445.04
  5. Step 5: Solve for x
    x = 7,960,336,445.04/101,918.70
  6. Step 6: Final answer
    x = 78,104.77

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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.