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Finding the Fourth Proportional to 112,859.63, 155,745.15 and 61,875.17

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Solution

The fourth proportional to 112,859.63, 155,745.15 and 61,875.17 is: 85,387.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,859.63 : 155,745.15 = 61,875.17 : x
  2. Step 2: Convert to fraction form
    112,859.63/155,745.15 = 61,875.17/x
  3. Step 3: Cross multiply
    112,859.63x = 155,745.15 × 61,875.17
  4. Step 4: Simplify right side
    112,859.63x = 9,636,757,632.93
  5. Step 5: Solve for x
    x = 9,636,757,632.93/112,859.63
  6. Step 6: Final answer
    x = 85,387.11

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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.