Home / 105,923.20-159,461.92-91,459.84

Finding the Fourth Proportional to 105,923.20, 159,461.92 and 91,459.84

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Solution

The fourth proportional to 105,923.20, 159,461.92 and 91,459.84 is: 137,688.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,923.20 : 159,461.92 = 91,459.84 : x
  2. Step 2: Convert to fraction form
    105,923.20/159,461.92 = 91,459.84/x
  3. Step 3: Cross multiply
    105,923.20x = 159,461.92 × 91,459.84
  4. Step 4: Simplify right side
    105,923.20x = 14,584,361,689.29
  5. Step 5: Solve for x
    x = 14,584,361,689.29/105,923.20
  6. Step 6: Final answer
    x = 137,688.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.