Home / 130,940.27-180,721.11-77,222.15

Finding the Fourth Proportional to 130,940.27, 180,721.11 and 77,222.15

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Solution

The fourth proportional to 130,940.27, 180,721.11 and 77,222.15 is: 106,580.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,940.27 : 180,721.11 = 77,222.15 : x
  2. Step 2: Convert to fraction form
    130,940.27/180,721.11 = 77,222.15/x
  3. Step 3: Cross multiply
    130,940.27x = 180,721.11 × 77,222.15
  4. Step 4: Simplify right side
    130,940.27x = 13,955,671,374.87
  5. Step 5: Solve for x
    x = 13,955,671,374.87/130,940.27
  6. Step 6: Final answer
    x = 106,580.44

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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.