Home / 101,985.11-140,735.42-56,665.90

Finding the Fourth Proportional to 101,985.11, 140,735.42 and 56,665.90

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Solution

The fourth proportional to 101,985.11, 140,735.42 and 56,665.90 is: 78,196.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,985.11 : 140,735.42 = 56,665.90 : x
  2. Step 2: Convert to fraction form
    101,985.11/140,735.42 = 56,665.90/x
  3. Step 3: Cross multiply
    101,985.11x = 140,735.42 × 56,665.90
  4. Step 4: Simplify right side
    101,985.11x = 7,974,898,532.50
  5. Step 5: Solve for x
    x = 7,974,898,532.50/101,985.11
  6. Step 6: Final answer
    x = 78,196.70

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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.