Home / 100,156.02-138,215.43-57,713.46

Finding the Fourth Proportional to 100,156.02, 138,215.43 and 57,713.46

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Solution

The fourth proportional to 100,156.02, 138,215.43 and 57,713.46 is: 79,644.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,156.02 : 138,215.43 = 57,713.46 : x
  2. Step 2: Convert to fraction form
    100,156.02/138,215.43 = 57,713.46/x
  3. Step 3: Cross multiply
    100,156.02x = 138,215.43 × 57,713.46
  4. Step 4: Simplify right side
    100,156.02x = 7,976,890,690.69
  5. Step 5: Solve for x
    x = 7,976,890,690.69/100,156.02
  6. Step 6: Final answer
    x = 79,644.65

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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.