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Finding the Fourth Proportional to 108,403.74, 162,395.19 and 79,888.91

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Solution

The fourth proportional to 108,403.74, 162,395.19 and 79,888.91 is: 119,678.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,403.74 : 162,395.19 = 79,888.91 : x
  2. Step 2: Convert to fraction form
    108,403.74/162,395.19 = 79,888.91/x
  3. Step 3: Cross multiply
    108,403.74x = 162,395.19 × 79,888.91
  4. Step 4: Simplify right side
    108,403.74x = 12,973,573,906.37
  5. Step 5: Solve for x
    x = 12,973,573,906.37/108,403.74
  6. Step 6: Final answer
    x = 119,678.29

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1.5x scale

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.