Home / 211,518.95-291,855.76-120,903.64

Finding the Fourth Proportional to 211,518.95, 291,855.76 and 120,903.64

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Solution

The fourth proportional to 211,518.95, 291,855.76 and 120,903.64 is: 166,823.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,518.95 : 291,855.76 = 120,903.64 : x
  2. Step 2: Convert to fraction form
    211,518.95/291,855.76 = 120,903.64/x
  3. Step 3: Cross multiply
    211,518.95x = 291,855.76 × 120,903.64
  4. Step 4: Simplify right side
    211,518.95x = 35,286,422,707.07
  5. Step 5: Solve for x
    x = 35,286,422,707.07/211,518.95
  6. Step 6: Final answer
    x = 166,823.93

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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.