Home / 387,440.99-581,186.09-103,126.89

Finding the Fourth Proportional to 387,440.99, 581,186.09 and 103,126.89

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Solution

The fourth proportional to 387,440.99, 581,186.09 and 103,126.89 is: 154,696.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,440.99 : 581,186.09 = 103,126.89 : x
  2. Step 2: Convert to fraction form
    387,440.99/581,186.09 = 103,126.89/x
  3. Step 3: Cross multiply
    387,440.99x = 581,186.09 × 103,126.89
  4. Step 4: Simplify right side
    387,440.99x = 59,935,913,457.33
  5. Step 5: Solve for x
    x = 59,935,913,457.33/387,440.99
  6. Step 6: Final answer
    x = 154,696.88

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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.