Home / 211,133.48-291,385.13-120,503.16

Finding the Fourth Proportional to 211,133.48, 291,385.13 and 120,503.16

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Solution

The fourth proportional to 211,133.48, 291,385.13 and 120,503.16 is: 166,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,133.48 : 291,385.13 = 120,503.16 : x
  2. Step 2: Convert to fraction form
    211,133.48/291,385.13 = 120,503.16/x
  3. Step 3: Cross multiply
    211,133.48x = 291,385.13 × 120,503.16
  4. Step 4: Simplify right side
    211,133.48x = 35,112,828,339.50
  5. Step 5: Solve for x
    x = 35,112,828,339.50/211,133.48
  6. Step 6: Final answer
    x = 166,306.31

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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.