Home / 79,728,334.80-119,592,502.20-78,972,507.60

Finding the Fourth Proportional to 79,728,334.80, 119,592,502.20 and 78,972,507.60

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Solution

The fourth proportional to 79,728,334.80, 119,592,502.20 and 78,972,507.60 is: 118,458,761.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,728,334.80 : 119,592,502.20 = 78,972,507.60 : x
  2. Step 2: Convert to fraction form
    79,728,334.80/119,592,502.20 = 78,972,507.60/x
  3. Step 3: Cross multiply
    79,728,334.80x = 119,592,502.20 × 78,972,507.60
  4. Step 4: Simplify right side
    79,728,334.80x = 9,444,519,788,892,516
  5. Step 5: Solve for x
    x = 9,444,519,788,892,516/79,728,334.80
  6. Step 6: Final answer
    x = 118,458,761.40

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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.