Home / 229,495.90-316,729.02-138,901.72

Finding the Fourth Proportional to 229,495.90, 316,729.02 and 138,901.72

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Solution

The fourth proportional to 229,495.90, 316,729.02 and 138,901.72 is: 191,699.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,495.90 : 316,729.02 = 138,901.72 : x
  2. Step 2: Convert to fraction form
    229,495.90/316,729.02 = 138,901.72/x
  3. Step 3: Cross multiply
    229,495.90x = 316,729.02 × 138,901.72
  4. Step 4: Simplify right side
    229,495.90x = 43,994,205,651.91
  5. Step 5: Solve for x
    x = 43,994,205,651.91/229,495.90
  6. Step 6: Final answer
    x = 191,699.31

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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.