Home / 134,978.75-186,263.15-83,989.91

Finding the Fourth Proportional to 134,978.75, 186,263.15 and 83,989.91

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Solution

The fourth proportional to 134,978.75, 186,263.15 and 83,989.91 is: 115,901.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,978.75 : 186,263.15 = 83,989.91 : x
  2. Step 2: Convert to fraction form
    134,978.75/186,263.15 = 83,989.91/x
  3. Step 3: Cross multiply
    134,978.75x = 186,263.15 × 83,989.91
  4. Step 4: Simplify right side
    134,978.75x = 15,644,225,250.52
  5. Step 5: Solve for x
    x = 15,644,225,250.52/134,978.75
  6. Step 6: Final answer
    x = 115,901.39

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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.