Home / 105,243.08-145,227.80-57,486.28

Finding the Fourth Proportional to 105,243.08, 145,227.80 and 57,486.28

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Solution

The fourth proportional to 105,243.08, 145,227.80 and 57,486.28 is: 79,326.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,243.08 : 145,227.80 = 57,486.28 : x
  2. Step 2: Convert to fraction form
    105,243.08/145,227.80 = 57,486.28/x
  3. Step 3: Cross multiply
    105,243.08x = 145,227.80 × 57,486.28
  4. Step 4: Simplify right side
    105,243.08x = 8,348,605,974.58
  5. Step 5: Solve for x
    x = 8,348,605,974.58/105,243.08
  6. Step 6: Final answer
    x = 79,326.89

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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.