Home / 133,131.20-183,728.52-72,707.45

Finding the Fourth Proportional to 133,131.20, 183,728.52 and 72,707.45

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Solution

The fourth proportional to 133,131.20, 183,728.52 and 72,707.45 is: 100,340.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,131.20 : 183,728.52 = 72,707.45 : x
  2. Step 2: Convert to fraction form
    133,131.20/183,728.52 = 72,707.45/x
  3. Step 3: Cross multiply
    133,131.20x = 183,728.52 × 72,707.45
  4. Step 4: Simplify right side
    133,131.20x = 13,358,431,262.83
  5. Step 5: Solve for x
    x = 13,358,431,262.83/133,131.20
  6. Step 6: Final answer
    x = 100,340.35

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1.5x scale

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.