Home / 138,074.02-207,501.05-81,924.69

Finding the Fourth Proportional to 138,074.02, 207,501.05 and 81,924.69

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Solution

The fourth proportional to 138,074.02, 207,501.05 and 81,924.69 is: 123,118.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,074.02 : 207,501.05 = 81,924.69 : x
  2. Step 2: Convert to fraction form
    138,074.02/207,501.05 = 81,924.69/x
  3. Step 3: Cross multiply
    138,074.02x = 207,501.05 × 81,924.69
  4. Step 4: Simplify right side
    138,074.02x = 16,999,459,195.92
  5. Step 5: Solve for x
    x = 16,999,459,195.92/138,074.02
  6. Step 6: Final answer
    x = 123,118.45

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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.