Home / 115,462,403.52-159,300,626.40-78,729,201.60

Finding the Fourth Proportional to 115,462,403.52, 159,300,626.40 and 78,729,201.60

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Solution

The fourth proportional to 115,462,403.52, 159,300,626.40 and 78,729,201.60 is: 108,620,734.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,462,403.52 : 159,300,626.40 = 78,729,201.60 : x
  2. Step 2: Convert to fraction form
    115,462,403.52/159,300,626.40 = 78,729,201.60/x
  3. Step 3: Cross multiply
    115,462,403.52x = 159,300,626.40 × 78,729,201.60
  4. Step 4: Simplify right side
    115,462,403.52x = 12,541,611,130,851,882
  5. Step 5: Solve for x
    x = 12,541,611,130,851,882/115,462,403.52
  6. Step 6: Final answer
    x = 108,620,734.96

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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.