Home / 211,913.72-317,750.76-69,720.52

Finding the Fourth Proportional to 211,913.72, 317,750.76 and 69,720.52

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Solution

The fourth proportional to 211,913.72, 317,750.76 and 69,720.52 is: 104,541.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,913.72 : 317,750.76 = 69,720.52 : x
  2. Step 2: Convert to fraction form
    211,913.72/317,750.76 = 69,720.52/x
  3. Step 3: Cross multiply
    211,913.72x = 317,750.76 × 69,720.52
  4. Step 4: Simplify right side
    211,913.72x = 22,153,746,628.84
  5. Step 5: Solve for x
    x = 22,153,746,628.84/211,913.72
  6. Step 6: Final answer
    x = 104,541.35

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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.