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Finding the Fourth Proportional to 121,502.84, 167,674.02 and 67,787.87

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Solution

The fourth proportional to 121,502.84, 167,674.02 and 67,787.87 is: 93,547.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,502.84 : 167,674.02 = 67,787.87 : x
  2. Step 2: Convert to fraction form
    121,502.84/167,674.02 = 67,787.87/x
  3. Step 3: Cross multiply
    121,502.84x = 167,674.02 × 67,787.87
  4. Step 4: Simplify right side
    121,502.84x = 11,366,263,831.77
  5. Step 5: Solve for x
    x = 11,366,263,831.77/121,502.84
  6. Step 6: Final answer
    x = 93,547.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.