Home / 133,086.90-183,652.16-72,645.50

Finding the Fourth Proportional to 133,086.90, 183,652.16 and 72,645.50

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Solution

The fourth proportional to 133,086.90, 183,652.16 and 72,645.50 is: 100,246.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,086.90 : 183,652.16 = 72,645.50 : x
  2. Step 2: Convert to fraction form
    133,086.90/183,652.16 = 72,645.50/x
  3. Step 3: Cross multiply
    133,086.90x = 183,652.16 × 72,645.50
  4. Step 4: Simplify right side
    133,086.90x = 13,341,502,989.28
  5. Step 5: Solve for x
    x = 13,341,502,989.28/133,086.90
  6. Step 6: Final answer
    x = 100,246.55

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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.