Home / 208,117.10-312,143.97-67,875.50

Finding the Fourth Proportional to 208,117.10, 312,143.97 and 67,875.50

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Solution

The fourth proportional to 208,117.10, 312,143.97 and 67,875.50 is: 101,802.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,117.10 : 312,143.97 = 67,875.50 : x
  2. Step 2: Convert to fraction form
    208,117.10/312,143.97 = 67,875.50/x
  3. Step 3: Cross multiply
    208,117.10x = 312,143.97 × 67,875.50
  4. Step 4: Simplify right side
    208,117.10x = 21,186,928,035.74
  5. Step 5: Solve for x
    x = 21,186,928,035.74/208,117.10
  6. Step 6: Final answer
    x = 101,802.92

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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.