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Finding the Fourth Proportional to 92,870.93, 128,220.50 and 68,969.45

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Solution

The fourth proportional to 92,870.93, 128,220.50 and 68,969.45 is: 95,221.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,870.93 : 128,220.50 = 68,969.45 : x
  2. Step 2: Convert to fraction form
    92,870.93/128,220.50 = 68,969.45/x
  3. Step 3: Cross multiply
    92,870.93x = 128,220.50 × 68,969.45
  4. Step 4: Simplify right side
    92,870.93x = 8,843,297,363.73
  5. Step 5: Solve for x
    x = 8,843,297,363.73/92,870.93
  6. Step 6: Final answer
    x = 95,221.37

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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.