Home / 211,409.28-291,746.88-121,968

Finding the Fourth Proportional to 211,409.28, 291,746.88 and 121,968

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Solution

The fourth proportional to 211,409.28, 291,746.88 and 121,968 is: 168,317.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,409.28 : 291,746.88 = 121,968 : x
  2. Step 2: Convert to fraction form
    211,409.28/291,746.88 = 121,968/x
  3. Step 3: Cross multiply
    211,409.28x = 291,746.88 × 121,968
  4. Step 4: Simplify right side
    211,409.28x = 35,583,783,459.84
  5. Step 5: Solve for x
    x = 35,583,783,459.84/211,409.28
  6. Step 6: Final answer
    x = 168,317.04

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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.