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Finding the Fourth Proportional to 142,018.08, 213,014.16 and 130,881.12

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Solution

The fourth proportional to 142,018.08, 213,014.16 and 130,881.12 is: 196,309.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,018.08 : 213,014.16 = 130,881.12 : x
  2. Step 2: Convert to fraction form
    142,018.08/213,014.16 = 130,881.12/x
  3. Step 3: Cross multiply
    142,018.08x = 213,014.16 × 130,881.12
  4. Step 4: Simplify right side
    142,018.08x = 27,879,531,836.66
  5. Step 5: Solve for x
    x = 27,879,531,836.66/142,018.08
  6. Step 6: Final answer
    x = 196,309.74

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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.