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Finding the Fourth Proportional to 92,899.80, 139,349.70 and 64,906.20

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Solution

The fourth proportional to 92,899.80, 139,349.70 and 64,906.20 is: 97,359.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,899.80 : 139,349.70 = 64,906.20 : x
  2. Step 2: Convert to fraction form
    92,899.80/139,349.70 = 64,906.20/x
  3. Step 3: Cross multiply
    92,899.80x = 139,349.70 × 64,906.20
  4. Step 4: Simplify right side
    92,899.80x = 9,044,659,498.14
  5. Step 5: Solve for x
    x = 9,044,659,498.14/92,899.80
  6. Step 6: Final answer
    x = 97,359.30

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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.