Home / 286,100.28-429,150.60-99,111.78

Finding the Fourth Proportional to 286,100.28, 429,150.60 and 99,111.78

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Solution

The fourth proportional to 286,100.28, 429,150.60 and 99,111.78 is: 148,667.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,100.28 : 429,150.60 = 99,111.78 : x
  2. Step 2: Convert to fraction form
    286,100.28/429,150.60 = 99,111.78/x
  3. Step 3: Cross multiply
    286,100.28x = 429,150.60 × 99,111.78
  4. Step 4: Simplify right side
    286,100.28x = 42,533,879,854.07
  5. Step 5: Solve for x
    x = 42,533,879,854.07/286,100.28
  6. Step 6: Final answer
    x = 148,667.73

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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.