Home / 102,148.56-140,967.72-61,869.60

Finding the Fourth Proportional to 102,148.56, 140,967.72 and 61,869.60

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Solution

The fourth proportional to 102,148.56, 140,967.72 and 61,869.60 is: 85,381.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,148.56 : 140,967.72 = 61,869.60 : x
  2. Step 2: Convert to fraction form
    102,148.56/140,967.72 = 61,869.60/x
  3. Step 3: Cross multiply
    102,148.56x = 140,967.72 × 61,869.60
  4. Step 4: Simplify right side
    102,148.56x = 8,721,616,449.31
  5. Step 5: Solve for x
    x = 8,721,616,449.31/102,148.56
  6. Step 6: Final answer
    x = 85,381.69

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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.