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Finding the Fourth Proportional to 163,656.84, 245,424.78 and 128,664.84

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Solution

The fourth proportional to 163,656.84, 245,424.78 and 128,664.84 is: 192,949.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,656.84 : 245,424.78 = 128,664.84 : x
  2. Step 2: Convert to fraction form
    163,656.84/245,424.78 = 128,664.84/x
  3. Step 3: Cross multiply
    163,656.84x = 245,424.78 × 128,664.84
  4. Step 4: Simplify right side
    163,656.84x = 31,577,540,050.74
  5. Step 5: Solve for x
    x = 31,577,540,050.74/163,656.84
  6. Step 6: Final answer
    x = 192,949.71

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1.5x scale

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.