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Finding the Fourth Proportional to 148,215.40, 222,323.10 and 65,109.40

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Solution

The fourth proportional to 148,215.40, 222,323.10 and 65,109.40 is: 97,664.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,215.40 : 222,323.10 = 65,109.40 : x
  2. Step 2: Convert to fraction form
    148,215.40/222,323.10 = 65,109.40/x
  3. Step 3: Cross multiply
    148,215.40x = 222,323.10 × 65,109.40
  4. Step 4: Simplify right side
    148,215.40x = 14,475,323,647.14
  5. Step 5: Solve for x
    x = 14,475,323,647.14/148,215.40
  6. Step 6: Final answer
    x = 97,664.10

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1.5x scale

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.