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Finding the Fourth Proportional to 110,972, 153,141.36 and 71,297.12

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Solution

The fourth proportional to 110,972, 153,141.36 and 71,297.12 is: 98,390.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,972 : 153,141.36 = 71,297.12 : x
  2. Step 2: Convert to fraction form
    110,972/153,141.36 = 71,297.12/x
  3. Step 3: Cross multiply
    110,972x = 153,141.36 × 71,297.12
  4. Step 4: Simplify right side
    110,972x = 10,918,537,920.88
  5. Step 5: Solve for x
    x = 10,918,537,920.88/110,972
  6. Step 6: Final answer
    x = 98,390.03

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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.