Home / 178,123.50-245,812.06-121,533.66

Finding the Fourth Proportional to 178,123.50, 245,812.06 and 121,533.66

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Solution

The fourth proportional to 178,123.50, 245,812.06 and 121,533.66 is: 167,717.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,123.50 : 245,812.06 = 121,533.66 : x
  2. Step 2: Convert to fraction form
    178,123.50/245,812.06 = 121,533.66/x
  3. Step 3: Cross multiply
    178,123.50x = 245,812.06 × 121,533.66
  4. Step 4: Simplify right side
    178,123.50x = 29,874,439,323.94
  5. Step 5: Solve for x
    x = 29,874,439,323.94/178,123.50
  6. Step 6: Final answer
    x = 167,717.56

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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.