Home / 105,516.72-145,613.16-57,772.92

Finding the Fourth Proportional to 105,516.72, 145,613.16 and 57,772.92

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Solution

The fourth proportional to 105,516.72, 145,613.16 and 57,772.92 is: 79,726.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,516.72 : 145,613.16 = 57,772.92 : x
  2. Step 2: Convert to fraction form
    105,516.72/145,613.16 = 57,772.92/x
  3. Step 3: Cross multiply
    105,516.72x = 145,613.16 × 57,772.92
  4. Step 4: Simplify right side
    105,516.72x = 8,412,497,443.63
  5. Step 5: Solve for x
    x = 8,412,497,443.63/105,516.72
  6. Step 6: Final answer
    x = 79,726.68

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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.