Home / 208,141.58-312,336.93-89,812.92

Finding the Fourth Proportional to 208,141.58, 312,336.93 and 89,812.92

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Solution

The fourth proportional to 208,141.58, 312,336.93 and 89,812.92 is: 134,773.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,141.58 : 312,336.93 = 89,812.92 : x
  2. Step 2: Convert to fraction form
    208,141.58/312,336.93 = 89,812.92/x
  3. Step 3: Cross multiply
    208,141.58x = 312,336.93 × 89,812.92
  4. Step 4: Simplify right side
    208,141.58x = 28,051,890,953.10
  5. Step 5: Solve for x
    x = 28,051,890,953.10/208,141.58
  6. Step 6: Final answer
    x = 134,773.12

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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.