Home / 78,263,999.60-117,395,999.40-69,654,655.40

Finding the Fourth Proportional to 78,263,999.60, 117,395,999.40 and 69,654,655.40

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Solution

The fourth proportional to 78,263,999.60, 117,395,999.40 and 69,654,655.40 is: 104,481,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,263,999.60 : 117,395,999.40 = 69,654,655.40 : x
  2. Step 2: Convert to fraction form
    78,263,999.60/117,395,999.40 = 69,654,655.40/x
  3. Step 3: Cross multiply
    78,263,999.60x = 117,395,999.40 × 69,654,655.40
  4. Step 4: Simplify right side
    78,263,999.60x = 8,177,177,883,545,608
  5. Step 5: Solve for x
    x = 8,177,177,883,545,608/78,263,999.60
  6. Step 6: Final answer
    x = 104,481,983.10

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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.