Home / 101,380.07-139,902-56,056.90

Finding the Fourth Proportional to 101,380.07, 139,902 and 56,056.90

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Solution

The fourth proportional to 101,380.07, 139,902 and 56,056.90 is: 77,357.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,380.07 : 139,902 = 56,056.90 : x
  2. Step 2: Convert to fraction form
    101,380.07/139,902 = 56,056.90/x
  3. Step 3: Cross multiply
    101,380.07x = 139,902 × 56,056.90
  4. Step 4: Simplify right side
    101,380.07x = 7,842,472,423.80
  5. Step 5: Solve for x
    x = 7,842,472,423.80/101,380.07
  6. Step 6: Final answer
    x = 77,357.14

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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.