Home / 140,074.08-210,150-77,788.32

Finding the Fourth Proportional to 140,074.08, 210,150 and 77,788.32

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Solution

The fourth proportional to 140,074.08, 210,150 and 77,788.32 is: 116,704.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,074.08 : 210,150 = 77,788.32 : x
  2. Step 2: Convert to fraction form
    140,074.08/210,150 = 77,788.32/x
  3. Step 3: Cross multiply
    140,074.08x = 210,150 × 77,788.32
  4. Step 4: Simplify right side
    140,074.08x = 16,347,215,448.00
  5. Step 5: Solve for x
    x = 16,347,215,448.00/140,074.08
  6. Step 6: Final answer
    x = 116,704.07

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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.