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Finding the Fourth Proportional to 161,720.40, 242,580.60 and 147,723.60

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Solution

The fourth proportional to 161,720.40, 242,580.60 and 147,723.60 is: 221,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,720.40 : 242,580.60 = 147,723.60 : x
  2. Step 2: Convert to fraction form
    161,720.40/242,580.60 = 147,723.60/x
  3. Step 3: Cross multiply
    161,720.40x = 242,580.60 × 147,723.60
  4. Step 4: Simplify right side
    161,720.40x = 35,834,879,522.16
  5. Step 5: Solve for x
    x = 35,834,879,522.16/161,720.40
  6. Step 6: Final answer
    x = 221,585.40

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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.