Home / 92,647.12-139,156.66-55,280.12

Finding the Fourth Proportional to 92,647.12, 139,156.66 and 55,280.12

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Solution

The fourth proportional to 92,647.12, 139,156.66 and 55,280.12 is: 83,031.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,647.12 : 139,156.66 = 55,280.12 : x
  2. Step 2: Convert to fraction form
    92,647.12/139,156.66 = 55,280.12/x
  3. Step 3: Cross multiply
    92,647.12x = 139,156.66 × 55,280.12
  4. Step 4: Simplify right side
    92,647.12x = 7,692,596,863.60
  5. Step 5: Solve for x
    x = 7,692,596,863.60/92,647.12
  6. Step 6: Final answer
    x = 83,031.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.