Home / 157,645.45-217,548.93-86,026.69

Finding the Fourth Proportional to 157,645.45, 217,548.93 and 86,026.69

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Solution

The fourth proportional to 157,645.45, 217,548.93 and 86,026.69 is: 118,715.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,645.45 : 217,548.93 = 86,026.69 : x
  2. Step 2: Convert to fraction form
    157,645.45/217,548.93 = 86,026.69/x
  3. Step 3: Cross multiply
    157,645.45x = 217,548.93 × 86,026.69
  4. Step 4: Simplify right side
    157,645.45x = 18,715,014,360.94
  5. Step 5: Solve for x
    x = 18,715,014,360.94/157,645.45
  6. Step 6: Final answer
    x = 118,715.85

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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.