Home / 131,397.42-181,328.63-74,808.75

Finding the Fourth Proportional to 131,397.42, 181,328.63 and 74,808.75

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Solution

The fourth proportional to 131,397.42, 181,328.63 and 74,808.75 is: 103,236.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,397.42 : 181,328.63 = 74,808.75 : x
  2. Step 2: Convert to fraction form
    131,397.42/181,328.63 = 74,808.75/x
  3. Step 3: Cross multiply
    131,397.42x = 181,328.63 × 74,808.75
  4. Step 4: Simplify right side
    131,397.42x = 13,564,967,775.47
  5. Step 5: Solve for x
    x = 13,564,967,775.47/131,397.42
  6. Step 6: Final answer
    x = 103,236.18

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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.