Home / 105,256.90-145,252.82-57,509.22

Finding the Fourth Proportional to 105,256.90, 145,252.82 and 57,509.22

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Solution

The fourth proportional to 105,256.90, 145,252.82 and 57,509.22 is: 79,361.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,256.90 : 145,252.82 = 57,509.22 : x
  2. Step 2: Convert to fraction form
    105,256.90/145,252.82 = 57,509.22/x
  3. Step 3: Cross multiply
    105,256.90x = 145,252.82 × 57,509.22
  4. Step 4: Simplify right side
    105,256.90x = 8,353,376,381.00
  5. Step 5: Solve for x
    x = 8,353,376,381.00/105,256.90
  6. Step 6: Final answer
    x = 79,361.79

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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.