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Finding the Fourth Proportional to 101,808.18, 140,501.88 and 56,490.30

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Solution

The fourth proportional to 101,808.18, 140,501.88 and 56,490.30 is: 77,960.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,808.18 : 140,501.88 = 56,490.30 : x
  2. Step 2: Convert to fraction form
    101,808.18/140,501.88 = 56,490.30/x
  3. Step 3: Cross multiply
    101,808.18x = 140,501.88 × 56,490.30
  4. Step 4: Simplify right side
    101,808.18x = 7,936,993,351.76
  5. Step 5: Solve for x
    x = 7,936,993,351.76/101,808.18
  6. Step 6: Final answer
    x = 77,960.27

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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.