Home / 82,483,904.20-123,725,856.30-81,208,445.80

Finding the Fourth Proportional to 82,483,904.20, 123,725,856.30 and 81,208,445.80

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Solution

The fourth proportional to 82,483,904.20, 123,725,856.30 and 81,208,445.80 is: 121,812,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,483,904.20 : 123,725,856.30 = 81,208,445.80 : x
  2. Step 2: Convert to fraction form
    82,483,904.20/123,725,856.30 = 81,208,445.80/x
  3. Step 3: Cross multiply
    82,483,904.20x = 123,725,856.30 × 81,208,445.80
  4. Step 4: Simplify right side
    82,483,904.20x = 10,047,584,495,397,138
  5. Step 5: Solve for x
    x = 10,047,584,495,397,138/82,483,904.20
  6. Step 6: Final answer
    x = 121,812,668.70

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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.