Home / 112,413.64-155,203.14-72,144.76

Finding the Fourth Proportional to 112,413.64, 155,203.14 and 72,144.76

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Solution

The fourth proportional to 112,413.64, 155,203.14 and 72,144.76 is: 99,606.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,413.64 : 155,203.14 = 72,144.76 : x
  2. Step 2: Convert to fraction form
    112,413.64/155,203.14 = 72,144.76/x
  3. Step 3: Cross multiply
    112,413.64x = 155,203.14 × 72,144.76
  4. Step 4: Simplify right side
    112,413.64x = 11,197,093,286.55
  5. Step 5: Solve for x
    x = 11,197,093,286.55/112,413.64
  6. Step 6: Final answer
    x = 99,606.18

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Half scale
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Double scale
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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.