Home / 105,108.09-145,049.57-57,362.50

Finding the Fourth Proportional to 105,108.09, 145,049.57 and 57,362.50

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Solution

The fourth proportional to 105,108.09, 145,049.57 and 57,362.50 is: 79,160.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,108.09 : 145,049.57 = 57,362.50 : x
  2. Step 2: Convert to fraction form
    105,108.09/145,049.57 = 57,362.50/x
  3. Step 3: Cross multiply
    105,108.09x = 145,049.57 × 57,362.50
  4. Step 4: Simplify right side
    105,108.09x = 8,320,405,959.13
  5. Step 5: Solve for x
    x = 8,320,405,959.13/105,108.09
  6. Step 6: Final answer
    x = 79,160.47

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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.