Home / 208,124.04-312,059.61-81,612.69

Finding the Fourth Proportional to 208,124.04, 312,059.61 and 81,612.69

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Solution

The fourth proportional to 208,124.04, 312,059.61 and 81,612.69 is: 122,369.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,124.04 : 312,059.61 = 81,612.69 : x
  2. Step 2: Convert to fraction form
    208,124.04/312,059.61 = 81,612.69/x
  3. Step 3: Cross multiply
    208,124.04x = 312,059.61 × 81,612.69
  4. Step 4: Simplify right side
    208,124.04x = 25,468,024,212.45
  5. Step 5: Solve for x
    x = 25,468,024,212.45/208,124.04
  6. Step 6: Final answer
    x = 122,369.45

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1.5x scale

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.