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Finding the Fourth Proportional to 101,223.84, 139,688.22 and 55,904.76

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Solution

The fourth proportional to 101,223.84, 139,688.22 and 55,904.76 is: 77,148.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,223.84 : 139,688.22 = 55,904.76 : x
  2. Step 2: Convert to fraction form
    101,223.84/139,688.22 = 55,904.76/x
  3. Step 3: Cross multiply
    101,223.84x = 139,688.22 × 55,904.76
  4. Step 4: Simplify right side
    101,223.84x = 7,809,236,413.93
  5. Step 5: Solve for x
    x = 7,809,236,413.93/101,223.84
  6. Step 6: Final answer
    x = 77,148.19

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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.