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Finding the Fourth Proportional to 163,443.52, 225,561.20 and 99,763.04

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Solution

The fourth proportional to 163,443.52, 225,561.20 and 99,763.04 is: 137,678.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,443.52 : 225,561.20 = 99,763.04 : x
  2. Step 2: Convert to fraction form
    163,443.52/225,561.20 = 99,763.04/x
  3. Step 3: Cross multiply
    163,443.52x = 225,561.20 × 99,763.04
  4. Step 4: Simplify right side
    163,443.52x = 22,502,671,018.05
  5. Step 5: Solve for x
    x = 22,502,671,018.05/163,443.52
  6. Step 6: Final answer
    x = 137,678.58

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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.