Home / 113,320,015.20-169,980,022.80-72,505,346.40

Finding the Fourth Proportional to 113,320,015.20, 169,980,022.80 and 72,505,346.40

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Solution

The fourth proportional to 113,320,015.20, 169,980,022.80 and 72,505,346.40 is: 108,758,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,320,015.20 : 169,980,022.80 = 72,505,346.40 : x
  2. Step 2: Convert to fraction form
    113,320,015.20/169,980,022.80 = 72,505,346.40/x
  3. Step 3: Cross multiply
    113,320,015.20x = 169,980,022.80 × 72,505,346.40
  4. Step 4: Simplify right side
    113,320,015.20x = 12,324,460,434,193,900
  5. Step 5: Solve for x
    x = 12,324,460,434,193,900/113,320,015.20
  6. Step 6: Final answer
    x = 108,758,019.60

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1.5x scale

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.