Home / 136,208.10-187,973.28-113,509.11

Finding the Fourth Proportional to 136,208.10, 187,973.28 and 113,509.11

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Solution

The fourth proportional to 136,208.10, 187,973.28 and 113,509.11 is: 156,647.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,208.10 : 187,973.28 = 113,509.11 : x
  2. Step 2: Convert to fraction form
    136,208.10/187,973.28 = 113,509.11/x
  3. Step 3: Cross multiply
    136,208.10x = 187,973.28 × 113,509.11
  4. Step 4: Simplify right side
    136,208.10x = 21,336,679,716.58
  5. Step 5: Solve for x
    x = 21,336,679,716.58/136,208.10
  6. Step 6: Final answer
    x = 156,647.66

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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.