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Finding the Fourth Proportional to 161,690.84, 223,140.08 and 90,070.84

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Solution

The fourth proportional to 161,690.84, 223,140.08 and 90,070.84 is: 124,301.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,690.84 : 223,140.08 = 90,070.84 : x
  2. Step 2: Convert to fraction form
    161,690.84/223,140.08 = 90,070.84/x
  3. Step 3: Cross multiply
    161,690.84x = 223,140.08 × 90,070.84
  4. Step 4: Simplify right side
    161,690.84x = 20,098,414,443.27
  5. Step 5: Solve for x
    x = 20,098,414,443.27/161,690.84
  6. Step 6: Final answer
    x = 124,301.50

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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.