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Finding the Fourth Proportional to 161,690.34, 223,139.39 and 90,070.34

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Solution

The fourth proportional to 161,690.34, 223,139.39 and 90,070.34 is: 124,300.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,690.34 : 223,139.39 = 90,070.34 : x
  2. Step 2: Convert to fraction form
    161,690.34/223,139.39 = 90,070.34/x
  3. Step 3: Cross multiply
    161,690.34x = 223,139.39 × 90,070.34
  4. Step 4: Simplify right side
    161,690.34x = 20,098,240,724.69
  5. Step 5: Solve for x
    x = 20,098,240,724.69/161,690.34
  6. Step 6: Final answer
    x = 124,300.81

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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.