Home / 145,152.51-200,331.14-81,494.61

Finding the Fourth Proportional to 145,152.51, 200,331.14 and 81,494.61

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Solution

The fourth proportional to 145,152.51, 200,331.14 and 81,494.61 is: 112,474.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,152.51 : 200,331.14 = 81,494.61 : x
  2. Step 2: Convert to fraction form
    145,152.51/200,331.14 = 81,494.61/x
  3. Step 3: Cross multiply
    145,152.51x = 200,331.14 × 81,494.61
  4. Step 4: Simplify right side
    145,152.51x = 16,325,907,717.68
  5. Step 5: Solve for x
    x = 16,325,907,717.68/145,152.51
  6. Step 6: Final answer
    x = 112,474.17

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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.