Home / 105,107.36-145,047.11-57,360.29

Finding the Fourth Proportional to 105,107.36, 145,047.11 and 57,360.29

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Solution

The fourth proportional to 105,107.36, 145,047.11 and 57,360.29 is: 79,156.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,107.36 : 145,047.11 = 57,360.29 : x
  2. Step 2: Convert to fraction form
    105,107.36/145,047.11 = 57,360.29/x
  3. Step 3: Cross multiply
    105,107.36x = 145,047.11 × 57,360.29
  4. Step 4: Simplify right side
    105,107.36x = 8,319,943,281.22
  5. Step 5: Solve for x
    x = 8,319,943,281.22/105,107.36
  6. Step 6: Final answer
    x = 79,156.62

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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.