Home / 79,715,128.80-119,572,693.20-72,660,741.60

Finding the Fourth Proportional to 79,715,128.80, 119,572,693.20 and 72,660,741.60

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Solution

The fourth proportional to 79,715,128.80, 119,572,693.20 and 72,660,741.60 is: 108,991,112.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,715,128.80 : 119,572,693.20 = 72,660,741.60 : x
  2. Step 2: Convert to fraction form
    79,715,128.80/119,572,693.20 = 72,660,741.60/x
  3. Step 3: Cross multiply
    79,715,128.80x = 119,572,693.20 × 72,660,741.60
  4. Step 4: Simplify right side
    79,715,128.80x = 8,688,240,563,021,277
  5. Step 5: Solve for x
    x = 8,688,240,563,021,277/79,715,128.80
  6. Step 6: Final answer
    x = 108,991,112.40

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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.