Home / 106,465.20-159,697.80-87,438.30

Finding the Fourth Proportional to 106,465.20, 159,697.80 and 87,438.30

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Solution

The fourth proportional to 106,465.20, 159,697.80 and 87,438.30 is: 131,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,465.20 : 159,697.80 = 87,438.30 : x
  2. Step 2: Convert to fraction form
    106,465.20/159,697.80 = 87,438.30/x
  3. Step 3: Cross multiply
    106,465.20x = 159,697.80 × 87,438.30
  4. Step 4: Simplify right side
    106,465.20x = 13,963,704,145.74
  5. Step 5: Solve for x
    x = 13,963,704,145.74/106,465.20
  6. Step 6: Final answer
    x = 131,157.45

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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.