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Finding the Fourth Proportional to 108,729.76, 150,052.12 and 67,918.06

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Solution

The fourth proportional to 108,729.76, 150,052.12 and 67,918.06 is: 93,730.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,729.76 : 150,052.12 = 67,918.06 : x
  2. Step 2: Convert to fraction form
    108,729.76/150,052.12 = 67,918.06/x
  3. Step 3: Cross multiply
    108,729.76x = 150,052.12 × 67,918.06
  4. Step 4: Simplify right side
    108,729.76x = 10,191,248,889.29
  5. Step 5: Solve for x
    x = 10,191,248,889.29/108,729.76
  6. Step 6: Final answer
    x = 93,730.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.