Home / 131,490.90-181,457.01-74,911.86

Finding the Fourth Proportional to 131,490.90, 181,457.01 and 74,911.86

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Solution

The fourth proportional to 131,490.90, 181,457.01 and 74,911.86 is: 103,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,490.90 : 181,457.01 = 74,911.86 : x
  2. Step 2: Convert to fraction form
    131,490.90/181,457.01 = 74,911.86/x
  3. Step 3: Cross multiply
    131,490.90x = 181,457.01 × 74,911.86
  4. Step 4: Simplify right side
    131,490.90x = 13,593,282,129.14
  5. Step 5: Solve for x
    x = 13,593,282,129.14/131,490.90
  6. Step 6: Final answer
    x = 103,378.12

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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.