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Finding the Fourth Proportional to 100,894.57, 139,234.50 and 58,477.71

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Solution

The fourth proportional to 100,894.57, 139,234.50 and 58,477.71 is: 80,699.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,894.57 : 139,234.50 = 58,477.71 : x
  2. Step 2: Convert to fraction form
    100,894.57/139,234.50 = 58,477.71/x
  3. Step 3: Cross multiply
    100,894.57x = 139,234.50 × 58,477.71
  4. Step 4: Simplify right side
    100,894.57x = 8,142,114,713.00
  5. Step 5: Solve for x
    x = 8,142,114,713.00/100,894.57
  6. Step 6: Final answer
    x = 80,699.24

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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.