Home / 160,809.12-221,905.68-89,186.40

Finding the Fourth Proportional to 160,809.12, 221,905.68 and 89,186.40

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Solution

The fourth proportional to 160,809.12, 221,905.68 and 89,186.40 is: 123,071.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,809.12 : 221,905.68 = 89,186.40 : x
  2. Step 2: Convert to fraction form
    160,809.12/221,905.68 = 89,186.40/x
  3. Step 3: Cross multiply
    160,809.12x = 221,905.68 × 89,186.40
  4. Step 4: Simplify right side
    160,809.12x = 19,790,968,738.75
  5. Step 5: Solve for x
    x = 19,790,968,738.75/160,809.12
  6. Step 6: Final answer
    x = 123,071.18

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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.