Home / 100,809.24-139,094.43-58,343.18

Finding the Fourth Proportional to 100,809.24, 139,094.43 and 58,343.18

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Solution

The fourth proportional to 100,809.24, 139,094.43 and 58,343.18 is: 80,500.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,809.24 : 139,094.43 = 58,343.18 : x
  2. Step 2: Convert to fraction form
    100,809.24/139,094.43 = 58,343.18/x
  3. Step 3: Cross multiply
    100,809.24x = 139,094.43 × 58,343.18
  4. Step 4: Simplify right side
    100,809.24x = 8,115,210,671.02
  5. Step 5: Solve for x
    x = 8,115,210,671.02/100,809.24
  6. Step 6: Final answer
    x = 80,500.66

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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.