Home / 136,985.40-205,478.10-115,334.10

Finding the Fourth Proportional to 136,985.40, 205,478.10 and 115,334.10

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Solution

The fourth proportional to 136,985.40, 205,478.10 and 115,334.10 is: 173,001.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,985.40 : 205,478.10 = 115,334.10 : x
  2. Step 2: Convert to fraction form
    136,985.40/205,478.10 = 115,334.10/x
  3. Step 3: Cross multiply
    136,985.40x = 205,478.10 × 115,334.10
  4. Step 4: Simplify right side
    136,985.40x = 23,698,631,733.21
  5. Step 5: Solve for x
    x = 23,698,631,733.21/136,985.40
  6. Step 6: Final answer
    x = 173,001.15

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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.