Home / 136,564.02-188,459.10-76,138.44

Finding the Fourth Proportional to 136,564.02, 188,459.10 and 76,138.44

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Solution

The fourth proportional to 136,564.02, 188,459.10 and 76,138.44 is: 105,071.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,564.02 : 188,459.10 = 76,138.44 : x
  2. Step 2: Convert to fraction form
    136,564.02/188,459.10 = 76,138.44/x
  3. Step 3: Cross multiply
    136,564.02x = 188,459.10 × 76,138.44
  4. Step 4: Simplify right side
    136,564.02x = 14,348,981,877.80
  5. Step 5: Solve for x
    x = 14,348,981,877.80/136,564.02
  6. Step 6: Final answer
    x = 105,071.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.