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Finding the Fourth Proportional to 92,971, 139,962.40 and 84,704.14

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Solution

The fourth proportional to 92,971, 139,962.40 and 84,704.14 is: 127,517.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,971 : 139,962.40 = 84,704.14 : x
  2. Step 2: Convert to fraction form
    92,971/139,962.40 = 84,704.14/x
  3. Step 3: Cross multiply
    92,971x = 139,962.40 × 84,704.14
  4. Step 4: Simplify right side
    92,971x = 11,855,394,724.34
  5. Step 5: Solve for x
    x = 11,855,394,724.34/92,971
  6. Step 6: Final answer
    x = 127,517.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.