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Finding the Fourth Proportional to 191,220.93, 286,831.08 and 91,077.39

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Solution

The fourth proportional to 191,220.93, 286,831.08 and 91,077.39 is: 136,615.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,220.93 : 286,831.08 = 91,077.39 : x
  2. Step 2: Convert to fraction form
    191,220.93/286,831.08 = 91,077.39/x
  3. Step 3: Cross multiply
    191,220.93x = 286,831.08 × 91,077.39
  4. Step 4: Simplify right side
    191,220.93x = 26,123,826,137.28
  5. Step 5: Solve for x
    x = 26,123,826,137.28/191,220.93
  6. Step 6: Final answer
    x = 136,615.93

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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.