Home / 133,288.42-183,938-72,859.30

Finding the Fourth Proportional to 133,288.42, 183,938 and 72,859.30

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Solution

The fourth proportional to 133,288.42, 183,938 and 72,859.30 is: 100,545.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,288.42 : 183,938 = 72,859.30 : x
  2. Step 2: Convert to fraction form
    133,288.42/183,938 = 72,859.30/x
  3. Step 3: Cross multiply
    133,288.42x = 183,938 × 72,859.30
  4. Step 4: Simplify right side
    133,288.42x = 13,401,593,923.40
  5. Step 5: Solve for x
    x = 13,401,593,923.40/133,288.42
  6. Step 6: Final answer
    x = 100,545.82

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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.