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Finding the Fourth Proportional to 163,386.60, 245,079.90 and 107,399.40

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Solution

The fourth proportional to 163,386.60, 245,079.90 and 107,399.40 is: 161,099.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,386.60 : 245,079.90 = 107,399.40 : x
  2. Step 2: Convert to fraction form
    163,386.60/245,079.90 = 107,399.40/x
  3. Step 3: Cross multiply
    163,386.60x = 245,079.90 × 107,399.40
  4. Step 4: Simplify right side
    163,386.60x = 26,321,434,212.06
  5. Step 5: Solve for x
    x = 26,321,434,212.06/163,386.60
  6. Step 6: Final answer
    x = 161,099.10

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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.