Home / 135,814.81-187,421.76-75,386.17

Finding the Fourth Proportional to 135,814.81, 187,421.76 and 75,386.17

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Solution

The fourth proportional to 135,814.81, 187,421.76 and 75,386.17 is: 104,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,814.81 : 187,421.76 = 75,386.17 : x
  2. Step 2: Convert to fraction form
    135,814.81/187,421.76 = 75,386.17/x
  3. Step 3: Cross multiply
    135,814.81x = 187,421.76 × 75,386.17
  4. Step 4: Simplify right side
    135,814.81x = 14,129,008,661.06
  5. Step 5: Solve for x
    x = 14,129,008,661.06/135,814.81
  6. Step 6: Final answer
    x = 104,031.43

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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.