Home / 107,439.21-148,112.15-75,509.01

Finding the Fourth Proportional to 107,439.21, 148,112.15 and 75,509.01

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Solution

The fourth proportional to 107,439.21, 148,112.15 and 75,509.01 is: 104,094.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,439.21 : 148,112.15 = 75,509.01 : x
  2. Step 2: Convert to fraction form
    107,439.21/148,112.15 = 75,509.01/x
  3. Step 3: Cross multiply
    107,439.21x = 148,112.15 × 75,509.01
  4. Step 4: Simplify right side
    107,439.21x = 11,183,801,437.93
  5. Step 5: Solve for x
    x = 11,183,801,437.93/107,439.21
  6. Step 6: Final answer
    x = 104,094.23

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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.