Home / 105,262.21-145,262.87-57,515.55

Finding the Fourth Proportional to 105,262.21, 145,262.87 and 57,515.55

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Solution

The fourth proportional to 105,262.21, 145,262.87 and 57,515.55 is: 79,372.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,262.21 : 145,262.87 = 57,515.55 : x
  2. Step 2: Convert to fraction form
    105,262.21/145,262.87 = 57,515.55/x
  3. Step 3: Cross multiply
    105,262.21x = 145,262.87 × 57,515.55
  4. Step 4: Simplify right side
    105,262.21x = 8,354,873,862.63
  5. Step 5: Solve for x
    x = 8,354,873,862.63/105,262.21
  6. Step 6: Final answer
    x = 79,372.02

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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.