Home / 105,118.84-145,062.90-57,371.80

Finding the Fourth Proportional to 105,118.84, 145,062.90 and 57,371.80

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Solution

The fourth proportional to 105,118.84, 145,062.90 and 57,371.80 is: 79,172.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,118.84 : 145,062.90 = 57,371.80 : x
  2. Step 2: Convert to fraction form
    105,118.84/145,062.90 = 57,371.80/x
  3. Step 3: Cross multiply
    105,118.84x = 145,062.90 × 57,371.80
  4. Step 4: Simplify right side
    105,118.84x = 8,322,519,686.22
  5. Step 5: Solve for x
    x = 8,322,519,686.22/105,118.84
  6. Step 6: Final answer
    x = 79,172.48

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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.