Home / 107,645.51-148,396.83-75,715.31

Finding the Fourth Proportional to 107,645.51, 148,396.83 and 75,715.31

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Solution

The fourth proportional to 107,645.51, 148,396.83 and 75,715.31 is: 104,378.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,645.51 : 148,396.83 = 75,715.31 : x
  2. Step 2: Convert to fraction form
    107,645.51/148,396.83 = 75,715.31/x
  3. Step 3: Cross multiply
    107,645.51x = 148,396.83 × 75,715.31
  4. Step 4: Simplify right side
    107,645.51x = 11,235,911,877.64
  5. Step 5: Solve for x
    x = 11,235,911,877.64/107,645.51
  6. Step 6: Final answer
    x = 104,378.83

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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.