Home / 81,389,358.30-122,084,037.45-75,153,783.90

Finding the Fourth Proportional to 81,389,358.30, 122,084,037.45 and 75,153,783.90

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Solution

The fourth proportional to 81,389,358.30, 122,084,037.45 and 75,153,783.90 is: 112,730,675.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,389,358.30 : 122,084,037.45 = 75,153,783.90 : x
  2. Step 2: Convert to fraction form
    81,389,358.30/122,084,037.45 = 75,153,783.90/x
  3. Step 3: Cross multiply
    81,389,358.30x = 122,084,037.45 × 75,153,783.90
  4. Step 4: Simplify right side
    81,389,358.30x = 9,175,077,368,156,808
  5. Step 5: Solve for x
    x = 9,175,077,368,156,808/81,389,358.30
  6. Step 6: Final answer
    x = 112,730,675.85

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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.