Home / 229,795.13-316,987.86-137,890.64

Finding the Fourth Proportional to 229,795.13, 316,987.86 and 137,890.64

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Solution

The fourth proportional to 229,795.13, 316,987.86 and 137,890.64 is: 190,211.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,795.13 : 316,987.86 = 137,890.64 : x
  2. Step 2: Convert to fraction form
    229,795.13/316,987.86 = 137,890.64/x
  3. Step 3: Cross multiply
    229,795.13x = 316,987.86 × 137,890.64
  4. Step 4: Simplify right side
    229,795.13x = 43,709,657,302.69
  5. Step 5: Solve for x
    x = 43,709,657,302.69/229,795.13
  6. Step 6: Final answer
    x = 190,211.42

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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.