Home / 105,081.88-145,011.79-57,334.21

Finding the Fourth Proportional to 105,081.88, 145,011.79 and 57,334.21

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Solution

The fourth proportional to 105,081.88, 145,011.79 and 57,334.21 is: 79,120.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,081.88 : 145,011.79 = 57,334.21 : x
  2. Step 2: Convert to fraction form
    105,081.88/145,011.79 = 57,334.21/x
  3. Step 3: Cross multiply
    105,081.88x = 145,011.79 × 57,334.21
  4. Step 4: Simplify right side
    105,081.88x = 8,314,136,420.34
  5. Step 5: Solve for x
    x = 8,314,136,420.34/105,081.88
  6. Step 6: Final answer
    x = 79,120.55

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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.