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Finding the Fourth Proportional to 116,859.69, 175,384.53 and 66,290.78

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Solution

The fourth proportional to 116,859.69, 175,384.53 and 66,290.78 is: 99,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,859.69 : 175,384.53 = 66,290.78 : x
  2. Step 2: Convert to fraction form
    116,859.69/175,384.53 = 66,290.78/x
  3. Step 3: Cross multiply
    116,859.69x = 175,384.53 × 66,290.78
  4. Step 4: Simplify right side
    116,859.69x = 11,626,376,085.26
  5. Step 5: Solve for x
    x = 11,626,376,085.26/116,859.69
  6. Step 6: Final answer
    x = 99,490.05

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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.