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Finding the Fourth Proportional to 92,314, 137,746.43 and 86,671.54

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Solution

The fourth proportional to 92,314, 137,746.43 and 86,671.54 is: 129,327.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,314 : 137,746.43 = 86,671.54 : x
  2. Step 2: Convert to fraction form
    92,314/137,746.43 = 86,671.54/x
  3. Step 3: Cross multiply
    92,314x = 137,746.43 × 86,671.54
  4. Step 4: Simplify right side
    92,314x = 11,938,695,217.60
  5. Step 5: Solve for x
    x = 11,938,695,217.60/92,314
  6. Step 6: Final answer
    x = 129,327.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.