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Finding the Fourth Proportional to 142,218.40, 213,133.20 and 94,698.40

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Solution

The fourth proportional to 142,218.40, 213,133.20 and 94,698.40 is: 141,918.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,218.40 : 213,133.20 = 94,698.40 : x
  2. Step 2: Convert to fraction form
    142,218.40/213,133.20 = 94,698.40/x
  3. Step 3: Cross multiply
    142,218.40x = 213,133.20 × 94,698.40
  4. Step 4: Simplify right side
    142,218.40x = 20,183,373,026.88
  5. Step 5: Solve for x
    x = 20,183,373,026.88/142,218.40
  6. Step 6: Final answer
    x = 141,918.16

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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.