Home / 108,430.68-162,743.20-90,771.86

Finding the Fourth Proportional to 108,430.68, 162,743.20 and 90,771.86

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Solution

The fourth proportional to 108,430.68, 162,743.20 and 90,771.86 is: 136,239.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,430.68 : 162,743.20 = 90,771.86 : x
  2. Step 2: Convert to fraction form
    108,430.68/162,743.20 = 90,771.86/x
  3. Step 3: Cross multiply
    108,430.68x = 162,743.20 × 90,771.86
  4. Step 4: Simplify right side
    108,430.68x = 14,772,502,966.35
  5. Step 5: Solve for x
    x = 14,772,502,966.35/108,430.68
  6. Step 6: Final answer
    x = 136,239.14

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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.