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Finding the Fourth Proportional to 152,247.81, 210,087.75 and 90,981.85

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Solution

The fourth proportional to 152,247.81, 210,087.75 and 90,981.85 is: 125,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,247.81 : 210,087.75 = 90,981.85 : x
  2. Step 2: Convert to fraction form
    152,247.81/210,087.75 = 90,981.85/x
  3. Step 3: Cross multiply
    152,247.81x = 210,087.75 × 90,981.85
  4. Step 4: Simplify right side
    152,247.81x = 19,114,171,632.12
  5. Step 5: Solve for x
    x = 19,114,171,632.12/152,247.81
  6. Step 6: Final answer
    x = 125,546.45

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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.