Home / 286,116.75-429,251.67-99,128.25

Finding the Fourth Proportional to 286,116.75, 429,251.67 and 99,128.25

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Solution

The fourth proportional to 286,116.75, 429,251.67 and 99,128.25 is: 148,718.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,116.75 : 429,251.67 = 99,128.25 : x
  2. Step 2: Convert to fraction form
    286,116.75/429,251.67 = 99,128.25/x
  3. Step 3: Cross multiply
    286,116.75x = 429,251.67 × 99,128.25
  4. Step 4: Simplify right side
    286,116.75x = 42,550,966,856.68
  5. Step 5: Solve for x
    x = 42,550,966,856.68/286,116.75
  6. Step 6: Final answer
    x = 148,718.89

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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.