Home / 105,371.25-145,412.47-59,431.49

Finding the Fourth Proportional to 105,371.25, 145,412.47 and 59,431.49

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Solution

The fourth proportional to 105,371.25, 145,412.47 and 59,431.49 is: 82,015.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,371.25 : 145,412.47 = 59,431.49 : x
  2. Step 2: Convert to fraction form
    105,371.25/145,412.47 = 59,431.49/x
  3. Step 3: Cross multiply
    105,371.25x = 145,412.47 × 59,431.49
  4. Step 4: Simplify right side
    105,371.25x = 8,642,079,314.90
  5. Step 5: Solve for x
    x = 8,642,079,314.90/105,371.25
  6. Step 6: Final answer
    x = 82,015.54

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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.