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Finding the Fourth Proportional to 124,828.70, 187,133.70 and 74,928.65

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Solution

The fourth proportional to 124,828.70, 187,133.70 and 74,928.65 is: 112,327.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,828.70 : 187,133.70 = 74,928.65 : x
  2. Step 2: Convert to fraction form
    124,828.70/187,133.70 = 74,928.65/x
  3. Step 3: Cross multiply
    124,828.70x = 187,133.70 × 74,928.65
  4. Step 4: Simplify right side
    124,828.70x = 14,021,675,510.51
  5. Step 5: Solve for x
    x = 14,021,675,510.51/124,828.70
  6. Step 6: Final answer
    x = 112,327.34

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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.