Home / 109,400.60-164,001.90-76,136.60

Finding the Fourth Proportional to 109,400.60, 164,001.90 and 76,136.60

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Solution

The fourth proportional to 109,400.60, 164,001.90 and 76,136.60 is: 114,136.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,400.60 : 164,001.90 = 76,136.60 : x
  2. Step 2: Convert to fraction form
    109,400.60/164,001.90 = 76,136.60/x
  3. Step 3: Cross multiply
    109,400.60x = 164,001.90 × 76,136.60
  4. Step 4: Simplify right side
    109,400.60x = 12,486,547,059.54
  5. Step 5: Solve for x
    x = 12,486,547,059.54/109,400.60
  6. Step 6: Final answer
    x = 114,136.00

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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.