Home / 211,085.04-291,325.02-120,420.12

Finding the Fourth Proportional to 211,085.04, 291,325.02 and 120,420.12

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Solution

The fourth proportional to 211,085.04, 291,325.02 and 120,420.12 is: 166,195.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,085.04 : 291,325.02 = 120,420.12 : x
  2. Step 2: Convert to fraction form
    211,085.04/291,325.02 = 120,420.12/x
  3. Step 3: Cross multiply
    211,085.04x = 291,325.02 × 120,420.12
  4. Step 4: Simplify right side
    211,085.04x = 35,081,393,867.40
  5. Step 5: Solve for x
    x = 35,081,393,867.40/211,085.04
  6. Step 6: Final answer
    x = 166,195.55

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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.