Home / 211,088.07-291,329.19-120,423.15

Finding the Fourth Proportional to 211,088.07, 291,329.19 and 120,423.15

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Solution

The fourth proportional to 211,088.07, 291,329.19 and 120,423.15 is: 166,199.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,088.07 : 291,329.19 = 120,423.15 : x
  2. Step 2: Convert to fraction form
    211,088.07/291,329.19 = 120,423.15/x
  3. Step 3: Cross multiply
    211,088.07x = 291,329.19 × 120,423.15
  4. Step 4: Simplify right side
    211,088.07x = 35,082,778,746.75
  5. Step 5: Solve for x
    x = 35,082,778,746.75/211,088.07
  6. Step 6: Final answer
    x = 166,199.72

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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.