Home / 211,513.07-291,847.65-120,897.76

Finding the Fourth Proportional to 211,513.07, 291,847.65 and 120,897.76

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Solution

The fourth proportional to 211,513.07, 291,847.65 and 120,897.76 is: 166,815.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,513.07 : 291,847.65 = 120,897.76 : x
  2. Step 2: Convert to fraction form
    211,513.07/291,847.65 = 120,897.76/x
  3. Step 3: Cross multiply
    211,513.07x = 291,847.65 × 120,897.76
  4. Step 4: Simplify right side
    211,513.07x = 35,283,727,146.26
  5. Step 5: Solve for x
    x = 35,283,727,146.26/211,513.07
  6. Step 6: Final answer
    x = 166,815.82

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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.