Home / 105,519.78-145,617.33-57,776.16

Finding the Fourth Proportional to 105,519.78, 145,617.33 and 57,776.16

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Solution

The fourth proportional to 105,519.78, 145,617.33 and 57,776.16 is: 79,731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,519.78 : 145,617.33 = 57,776.16 : x
  2. Step 2: Convert to fraction form
    105,519.78/145,617.33 = 57,776.16/x
  3. Step 3: Cross multiply
    105,519.78x = 145,617.33 × 57,776.16
  4. Step 4: Simplify right side
    105,519.78x = 8,413,210,156.85
  5. Step 5: Solve for x
    x = 8,413,210,156.85/105,519.78
  6. Step 6: Final answer
    x = 79,731.12

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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.