Home / 191,166.50-286,784.40-78,784.22

Finding the Fourth Proportional to 191,166.50, 286,784.40 and 78,784.22

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Solution

The fourth proportional to 191,166.50, 286,784.40 and 78,784.22 is: 118,190.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,166.50 : 286,784.40 = 78,784.22 : x
  2. Step 2: Convert to fraction form
    191,166.50/286,784.40 = 78,784.22/x
  3. Step 3: Cross multiply
    191,166.50x = 286,784.40 × 78,784.22
  4. Step 4: Simplify right side
    191,166.50x = 22,594,085,262.17
  5. Step 5: Solve for x
    x = 22,594,085,262.17/191,166.50
  6. Step 6: Final answer
    x = 118,190.61

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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.