Home / 101,981.04-140,655.96-73,780.08

Finding the Fourth Proportional to 101,981.04, 140,655.96 and 73,780.08

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Solution

The fourth proportional to 101,981.04, 140,655.96 and 73,780.08 is: 101,760.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,981.04 : 140,655.96 = 73,780.08 : x
  2. Step 2: Convert to fraction form
    101,981.04/140,655.96 = 73,780.08/x
  3. Step 3: Cross multiply
    101,981.04x = 140,655.96 × 73,780.08
  4. Step 4: Simplify right side
    101,981.04x = 10,377,607,981.28
  5. Step 5: Solve for x
    x = 10,377,607,981.28/101,981.04
  6. Step 6: Final answer
    x = 101,760.17

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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.