Home / 167,783.12-251,552.64-78,987.36

Finding the Fourth Proportional to 167,783.12, 251,552.64 and 78,987.36

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Solution

The fourth proportional to 167,783.12, 251,552.64 and 78,987.36 is: 118,423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,783.12 : 251,552.64 = 78,987.36 : x
  2. Step 2: Convert to fraction form
    167,783.12/251,552.64 = 78,987.36/x
  3. Step 3: Cross multiply
    167,783.12x = 251,552.64 × 78,987.36
  4. Step 4: Simplify right side
    167,783.12x = 19,869,478,934.63
  5. Step 5: Solve for x
    x = 19,869,478,934.63/167,783.12
  6. Step 6: Final answer
    x = 118,423.59

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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.