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Finding the Fourth Proportional to 115,653.20, 173,409.40 and 45,448.40

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Solution

The fourth proportional to 115,653.20, 173,409.40 and 45,448.40 is: 68,144.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,653.20 : 173,409.40 = 45,448.40 : x
  2. Step 2: Convert to fraction form
    115,653.20/173,409.40 = 45,448.40/x
  3. Step 3: Cross multiply
    115,653.20x = 173,409.40 × 45,448.40
  4. Step 4: Simplify right side
    115,653.20x = 7,881,179,774.96
  5. Step 5: Solve for x
    x = 7,881,179,774.96/115,653.20
  6. Step 6: Final answer
    x = 68,144.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.