Home / 131,313.42-181,211.40-74,727.90

Finding the Fourth Proportional to 131,313.42, 181,211.40 and 74,727.90

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Solution

The fourth proportional to 131,313.42, 181,211.40 and 74,727.90 is: 103,123.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,313.42 : 181,211.40 = 74,727.90 : x
  2. Step 2: Convert to fraction form
    131,313.42/181,211.40 = 74,727.90/x
  3. Step 3: Cross multiply
    131,313.42x = 181,211.40 × 74,727.90
  4. Step 4: Simplify right side
    131,313.42x = 13,541,547,378.06
  5. Step 5: Solve for x
    x = 13,541,547,378.06/131,313.42
  6. Step 6: Final answer
    x = 103,123.86

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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.