Home / 131,586.88-181,607.20-74,985.28

Finding the Fourth Proportional to 131,586.88, 181,607.20 and 74,985.28

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Solution

The fourth proportional to 131,586.88, 181,607.20 and 74,985.28 is: 103,489.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,586.88 : 181,607.20 = 74,985.28 : x
  2. Step 2: Convert to fraction form
    131,586.88/181,607.20 = 74,985.28/x
  3. Step 3: Cross multiply
    131,586.88x = 181,607.20 × 74,985.28
  4. Step 4: Simplify right side
    131,586.88x = 13,617,866,742.02
  5. Step 5: Solve for x
    x = 13,617,866,742.02/131,586.88
  6. Step 6: Final answer
    x = 103,489.55

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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.