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Finding the Fourth Proportional to 160,090.85, 220,926.05 and 87,495.21

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Solution

The fourth proportional to 160,090.85, 220,926.05 and 87,495.21 is: 120,743.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,090.85 : 220,926.05 = 87,495.21 : x
  2. Step 2: Convert to fraction form
    160,090.85/220,926.05 = 87,495.21/x
  3. Step 3: Cross multiply
    160,090.85x = 220,926.05 × 87,495.21
  4. Step 4: Simplify right side
    160,090.85x = 19,329,971,139.22
  5. Step 5: Solve for x
    x = 19,329,971,139.22/160,090.85
  6. Step 6: Final answer
    x = 120,743.76

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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.