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Finding the Fourth Proportional to 92,710.67, 139,065.93 and 87,977.51

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Solution

The fourth proportional to 92,710.67, 139,065.93 and 87,977.51 is: 131,966.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,710.67 : 139,065.93 = 87,977.51 : x
  2. Step 2: Convert to fraction form
    92,710.67/139,065.93 = 87,977.51/x
  3. Step 3: Cross multiply
    92,710.67x = 139,065.93 × 87,977.51
  4. Step 4: Simplify right side
    92,710.67x = 12,234,673,551.90
  5. Step 5: Solve for x
    x = 12,234,673,551.90/92,710.67
  6. Step 6: Final answer
    x = 131,966.19

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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.