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Finding the Fourth Proportional to 169,912,101.60, 255,000,862.80 and 79,046,949.60

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Solution

The fourth proportional to 169,912,101.60, 255,000,862.80 and 79,046,949.60 is: 118,632,164.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,912,101.60 : 255,000,862.80 = 79,046,949.60 : x
  2. Step 2: Convert to fraction form
    169,912,101.60/255,000,862.80 = 79,046,949.60/x
  3. Step 3: Cross multiply
    169,912,101.60x = 255,000,862.80 × 79,046,949.60
  4. Step 4: Simplify right side
    169,912,101.60x = 20,157,040,349,708,116
  5. Step 5: Solve for x
    x = 20,157,040,349,708,116/169,912,101.60
  6. Step 6: Final answer
    x = 118,632,164.28

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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.