Home / 102,705.20-141,657.36-64,943

Finding the Fourth Proportional to 102,705.20, 141,657.36 and 64,943

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Solution

The fourth proportional to 102,705.20, 141,657.36 and 64,943 is: 89,573.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,705.20 : 141,657.36 = 64,943 : x
  2. Step 2: Convert to fraction form
    102,705.20/141,657.36 = 64,943/x
  3. Step 3: Cross multiply
    102,705.20x = 141,657.36 × 64,943
  4. Step 4: Simplify right side
    102,705.20x = 9,199,653,930.48
  5. Step 5: Solve for x
    x = 9,199,653,930.48/102,705.20
  6. Step 6: Final answer
    x = 89,573.40

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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.