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Finding the Fourth Proportional to 100,900.32, 139,242.48 and 58,483.44

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Solution

The fourth proportional to 100,900.32, 139,242.48 and 58,483.44 is: 80,707.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,900.32 : 139,242.48 = 58,483.44 : x
  2. Step 2: Convert to fraction form
    100,900.32/139,242.48 = 58,483.44/x
  3. Step 3: Cross multiply
    100,900.32x = 139,242.48 × 58,483.44
  4. Step 4: Simplify right side
    100,900.32x = 8,143,379,224.53
  5. Step 5: Solve for x
    x = 8,143,379,224.53/100,900.32
  6. Step 6: Final answer
    x = 80,707.17

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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.