Home / 133,215.64-183,835.44-72,785

Finding the Fourth Proportional to 133,215.64, 183,835.44 and 72,785

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Solution

The fourth proportional to 133,215.64, 183,835.44 and 72,785 is: 100,442.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,215.64 : 183,835.44 = 72,785 : x
  2. Step 2: Convert to fraction form
    133,215.64/183,835.44 = 72,785/x
  3. Step 3: Cross multiply
    133,215.64x = 183,835.44 × 72,785
  4. Step 4: Simplify right side
    133,215.64x = 13,380,462,500.40
  5. Step 5: Solve for x
    x = 13,380,462,500.40/133,215.64
  6. Step 6: Final answer
    x = 100,442.13

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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.