Home / 145,651.68-218,322-103,972.32

Finding the Fourth Proportional to 145,651.68, 218,322 and 103,972.32

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Solution

The fourth proportional to 145,651.68, 218,322 and 103,972.32 is: 155,847.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,651.68 : 218,322 = 103,972.32 : x
  2. Step 2: Convert to fraction form
    145,651.68/218,322 = 103,972.32/x
  3. Step 3: Cross multiply
    145,651.68x = 218,322 × 103,972.32
  4. Step 4: Simplify right side
    145,651.68x = 22,699,444,847.04
  5. Step 5: Solve for x
    x = 22,699,444,847.04/145,651.68
  6. Step 6: Final answer
    x = 155,847.46

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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.