Home / 105,915.19-146,162.39-57,516.70

Finding the Fourth Proportional to 105,915.19, 146,162.39 and 57,516.70

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Solution

The fourth proportional to 105,915.19, 146,162.39 and 57,516.70 is: 79,372.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,915.19 : 146,162.39 = 57,516.70 : x
  2. Step 2: Convert to fraction form
    105,915.19/146,162.39 = 57,516.70/x
  3. Step 3: Cross multiply
    105,915.19x = 146,162.39 × 57,516.70
  4. Step 4: Simplify right side
    105,915.19x = 8,406,778,115.30
  5. Step 5: Solve for x
    x = 8,406,778,115.30/105,915.19
  6. Step 6: Final answer
    x = 79,372.74

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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.