Home / 140,394.24-210,689.78-81,148.41

Finding the Fourth Proportional to 140,394.24, 210,689.78 and 81,148.41

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Solution

The fourth proportional to 140,394.24, 210,689.78 and 81,148.41 is: 121,779.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,394.24 : 210,689.78 = 81,148.41 : x
  2. Step 2: Convert to fraction form
    140,394.24/210,689.78 = 81,148.41/x
  3. Step 3: Cross multiply
    140,394.24x = 210,689.78 × 81,148.41
  4. Step 4: Simplify right side
    140,394.24x = 17,097,140,244.51
  5. Step 5: Solve for x
    x = 17,097,140,244.51/140,394.24
  6. Step 6: Final answer
    x = 121,779.50

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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.