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Finding the Fourth Proportional to 100,271.45, 138,372.93 and 59,962.30

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Solution

The fourth proportional to 100,271.45, 138,372.93 and 59,962.30 is: 82,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,271.45 : 138,372.93 = 59,962.30 : x
  2. Step 2: Convert to fraction form
    100,271.45/138,372.93 = 59,962.30/x
  3. Step 3: Cross multiply
    100,271.45x = 138,372.93 × 59,962.30
  4. Step 4: Simplify right side
    100,271.45x = 8,297,158,794.61
  5. Step 5: Solve for x
    x = 8,297,158,794.61/100,271.45
  6. Step 6: Final answer
    x = 82,746.97

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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.