Home / 105,344.64-145,451.76-65,113.56

Finding the Fourth Proportional to 105,344.64, 145,451.76 and 65,113.56

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Solution

The fourth proportional to 105,344.64, 145,451.76 and 65,113.56 is: 89,903.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,344.64 : 145,451.76 = 65,113.56 : x
  2. Step 2: Convert to fraction form
    105,344.64/145,451.76 = 65,113.56/x
  3. Step 3: Cross multiply
    105,344.64x = 145,451.76 × 65,113.56
  4. Step 4: Simplify right side
    105,344.64x = 9,470,881,901.87
  5. Step 5: Solve for x
    x = 9,470,881,901.87/105,344.64
  6. Step 6: Final answer
    x = 89,903.79

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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.