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Finding the Fourth Proportional to 92,874.36, 139,275.90 and 45,460.20

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Solution

The fourth proportional to 92,874.36, 139,275.90 and 45,460.20 is: 68,172.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,874.36 : 139,275.90 = 45,460.20 : x
  2. Step 2: Convert to fraction form
    92,874.36/139,275.90 = 45,460.20/x
  3. Step 3: Cross multiply
    92,874.36x = 139,275.90 × 45,460.20
  4. Step 4: Simplify right side
    92,874.36x = 6,331,510,269.18
  5. Step 5: Solve for x
    x = 6,331,510,269.18/92,874.36
  6. Step 6: Final answer
    x = 68,172.85

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1.5x scale

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.