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Finding the Fourth Proportional to 93,029.40, 139,835.70 and 91,279.80

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Solution

The fourth proportional to 93,029.40, 139,835.70 and 91,279.80 is: 137,205.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,029.40 : 139,835.70 = 91,279.80 : x
  2. Step 2: Convert to fraction form
    93,029.40/139,835.70 = 91,279.80/x
  3. Step 3: Cross multiply
    93,029.40x = 139,835.70 × 91,279.80
  4. Step 4: Simplify right side
    93,029.40x = 12,764,174,728.86
  5. Step 5: Solve for x
    x = 12,764,174,728.86/93,029.40
  6. Step 6: Final answer
    x = 137,205.82

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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.