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Finding the Fourth Proportional to 117,974.94, 162,805.66 and 64,259.80

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Solution

The fourth proportional to 117,974.94, 162,805.66 and 64,259.80 is: 88,678.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,974.94 : 162,805.66 = 64,259.80 : x
  2. Step 2: Convert to fraction form
    117,974.94/162,805.66 = 64,259.80/x
  3. Step 3: Cross multiply
    117,974.94x = 162,805.66 × 64,259.80
  4. Step 4: Simplify right side
    117,974.94x = 10,461,859,150.47
  5. Step 5: Solve for x
    x = 10,461,859,150.47/117,974.94
  6. Step 6: Final answer
    x = 88,678.66

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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.