Home / 209,981.28-314,967.60-69,741.12

Finding the Fourth Proportional to 209,981.28, 314,967.60 and 69,741.12

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Solution

The fourth proportional to 209,981.28, 314,967.60 and 69,741.12 is: 104,610.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,981.28 : 314,967.60 = 69,741.12 : x
  2. Step 2: Convert to fraction form
    209,981.28/314,967.60 = 69,741.12/x
  3. Step 3: Cross multiply
    209,981.28x = 314,967.60 × 69,741.12
  4. Step 4: Simplify right side
    209,981.28x = 21,966,193,187.71
  5. Step 5: Solve for x
    x = 21,966,193,187.71/209,981.28
  6. Step 6: Final answer
    x = 104,610.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.