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Finding the Fourth Proportional to 115,404.40, 159,237.48 and 65,103.40

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Solution

The fourth proportional to 115,404.40, 159,237.48 and 65,103.40 is: 89,831.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,404.40 : 159,237.48 = 65,103.40 : x
  2. Step 2: Convert to fraction form
    115,404.40/159,237.48 = 65,103.40/x
  3. Step 3: Cross multiply
    115,404.40x = 159,237.48 × 65,103.40
  4. Step 4: Simplify right side
    115,404.40x = 10,366,901,355.43
  5. Step 5: Solve for x
    x = 10,366,901,355.43/115,404.40
  6. Step 6: Final answer
    x = 89,831.08

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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.