Home / 105,446.81-145,516.53-57,700.18

Finding the Fourth Proportional to 105,446.81, 145,516.53 and 57,700.18

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Solution

The fourth proportional to 105,446.81, 145,516.53 and 57,700.18 is: 79,626.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,446.81 : 145,516.53 = 57,700.18 : x
  2. Step 2: Convert to fraction form
    105,446.81/145,516.53 = 57,700.18/x
  3. Step 3: Cross multiply
    105,446.81x = 145,516.53 × 57,700.18
  4. Step 4: Simplify right side
    105,446.81x = 8,396,330,372.25
  5. Step 5: Solve for x
    x = 8,396,330,372.25/105,446.81
  6. Step 6: Final answer
    x = 79,626.21

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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.