Home / 123,672,004.30-185,508,006.45-78,434,346.70

Finding the Fourth Proportional to 123,672,004.30, 185,508,006.45 and 78,434,346.70

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Solution

The fourth proportional to 123,672,004.30, 185,508,006.45 and 78,434,346.70 is: 117,651,520.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,672,004.30 : 185,508,006.45 = 78,434,346.70 : x
  2. Step 2: Convert to fraction form
    123,672,004.30/185,508,006.45 = 78,434,346.70/x
  3. Step 3: Cross multiply
    123,672,004.30x = 185,508,006.45 × 78,434,346.70
  4. Step 4: Simplify right side
    123,672,004.30x = 14,550,199,293,525,136
  5. Step 5: Solve for x
    x = 14,550,199,293,525,136/123,672,004.30
  6. Step 6: Final answer
    x = 117,651,520.05

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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.