Home / 102,501.55-141,403.91-66,678.49

Finding the Fourth Proportional to 102,501.55, 141,403.91 and 66,678.49

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Solution

The fourth proportional to 102,501.55, 141,403.91 and 66,678.49 is: 91,984.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,501.55 : 141,403.91 = 66,678.49 : x
  2. Step 2: Convert to fraction form
    102,501.55/141,403.91 = 66,678.49/x
  3. Step 3: Cross multiply
    102,501.55x = 141,403.91 × 66,678.49
  4. Step 4: Simplify right side
    102,501.55x = 9,428,598,491.88
  5. Step 5: Solve for x
    x = 9,428,598,491.88/102,501.55
  6. Step 6: Final answer
    x = 91,984.94

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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.