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Finding the Fourth Proportional to 99,802.09, 137,750.03 and 65,816.73

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Solution

The fourth proportional to 99,802.09, 137,750.03 and 65,816.73 is: 90,842.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,802.09 : 137,750.03 = 65,816.73 : x
  2. Step 2: Convert to fraction form
    99,802.09/137,750.03 = 65,816.73/x
  3. Step 3: Cross multiply
    99,802.09x = 137,750.03 × 65,816.73
  4. Step 4: Simplify right side
    99,802.09x = 9,066,256,532.00
  5. Step 5: Solve for x
    x = 9,066,256,532.00/99,802.09
  6. Step 6: Final answer
    x = 90,842.35

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1.5x scale

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.