Home / 84,767,002.80-127,150,504.20-78,531,428.40

Finding the Fourth Proportional to 84,767,002.80, 127,150,504.20 and 78,531,428.40

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Solution

The fourth proportional to 84,767,002.80, 127,150,504.20 and 78,531,428.40 is: 117,797,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,767,002.80 : 127,150,504.20 = 78,531,428.40 : x
  2. Step 2: Convert to fraction form
    84,767,002.80/127,150,504.20 = 78,531,428.40/x
  3. Step 3: Cross multiply
    84,767,002.80x = 127,150,504.20 × 78,531,428.40
  4. Step 4: Simplify right side
    84,767,002.80x = 9,985,310,716,606,200
  5. Step 5: Solve for x
    x = 9,985,310,716,606,200/84,767,002.80
  6. Step 6: Final answer
    x = 117,797,142.60

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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.