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Finding the Fourth Proportional to 161,130.90, 222,360.89 and 89,509.08

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Solution

The fourth proportional to 161,130.90, 222,360.89 and 89,509.08 is: 123,522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,130.90 : 222,360.89 = 89,509.08 : x
  2. Step 2: Convert to fraction form
    161,130.90/222,360.89 = 89,509.08/x
  3. Step 3: Cross multiply
    161,130.90x = 222,360.89 × 89,509.08
  4. Step 4: Simplify right side
    161,130.90x = 19,903,318,244.34
  5. Step 5: Solve for x
    x = 19,903,318,244.34/161,130.90
  6. Step 6: Final answer
    x = 123,522.67

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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.