Home / 151,256.32-208,779.68-87,609.76

Finding the Fourth Proportional to 151,256.32, 208,779.68 and 87,609.76

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Solution

The fourth proportional to 151,256.32, 208,779.68 and 87,609.76 is: 120,928.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,256.32 : 208,779.68 = 87,609.76 : x
  2. Step 2: Convert to fraction form
    151,256.32/208,779.68 = 87,609.76/x
  3. Step 3: Cross multiply
    151,256.32x = 208,779.68 × 87,609.76
  4. Step 4: Simplify right side
    151,256.32x = 18,291,137,657.68
  5. Step 5: Solve for x
    x = 18,291,137,657.68/151,256.32
  6. Step 6: Final answer
    x = 120,928.09

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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.