Home / 90,144-134,939.20-56,707.51

Finding the Fourth Proportional to 90,144, 134,939.20 and 56,707.51

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Solution

The fourth proportional to 90,144, 134,939.20 and 56,707.51 is: 84,887.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,144 : 134,939.20 = 56,707.51 : x
  2. Step 2: Convert to fraction form
    90,144/134,939.20 = 56,707.51/x
  3. Step 3: Cross multiply
    90,144x = 134,939.20 × 56,707.51
  4. Step 4: Simplify right side
    90,144x = 7,652,066,033.39
  5. Step 5: Solve for x
    x = 7,652,066,033.39/90,144
  6. Step 6: Final answer
    x = 84,887.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.