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Finding the Fourth Proportional to 115,657.79, 159,683.96 and 74,898.59

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Solution

The fourth proportional to 115,657.79, 159,683.96 and 74,898.59 is: 103,409.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,657.79 : 159,683.96 = 74,898.59 : x
  2. Step 2: Convert to fraction form
    115,657.79/159,683.96 = 74,898.59/x
  3. Step 3: Cross multiply
    115,657.79x = 159,683.96 × 74,898.59
  4. Step 4: Simplify right side
    115,657.79x = 11,960,103,449.62
  5. Step 5: Solve for x
    x = 11,960,103,449.62/115,657.79
  6. Step 6: Final answer
    x = 103,409.41

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1.5x scale

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.