Home / 105,252.78-145,247.12-57,505.10

Finding the Fourth Proportional to 105,252.78, 145,247.12 and 57,505.10

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Solution

The fourth proportional to 105,252.78, 145,247.12 and 57,505.10 is: 79,356.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,252.78 : 145,247.12 = 57,505.10 : x
  2. Step 2: Convert to fraction form
    105,252.78/145,247.12 = 57,505.10/x
  3. Step 3: Cross multiply
    105,252.78x = 145,247.12 × 57,505.10
  4. Step 4: Simplify right side
    105,252.78x = 8,352,450,160.31
  5. Step 5: Solve for x
    x = 8,352,450,160.31/105,252.78
  6. Step 6: Final answer
    x = 79,356.10

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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.