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Finding the Fourth Proportional to 142,806.48, 214,220.40 and 42,958.68

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Solution

The fourth proportional to 142,806.48, 214,220.40 and 42,958.68 is: 64,441.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,806.48 : 214,220.40 = 42,958.68 : x
  2. Step 2: Convert to fraction form
    142,806.48/214,220.40 = 42,958.68/x
  3. Step 3: Cross multiply
    142,806.48x = 214,220.40 × 42,958.68
  4. Step 4: Simplify right side
    142,806.48x = 9,202,625,613.07
  5. Step 5: Solve for x
    x = 9,202,625,613.07/142,806.48
  6. Step 6: Final answer
    x = 64,441.23

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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.