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Finding the Fourth Proportional to 119,563.65, 164,973.66 and 90,875.70

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Solution

The fourth proportional to 119,563.65, 164,973.66 and 90,875.70 is: 125,390.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,563.65 : 164,973.66 = 90,875.70 : x
  2. Step 2: Convert to fraction form
    119,563.65/164,973.66 = 90,875.70/x
  3. Step 3: Cross multiply
    119,563.65x = 164,973.66 × 90,875.70
  4. Step 4: Simplify right side
    119,563.65x = 14,992,096,834.06
  5. Step 5: Solve for x
    x = 14,992,096,834.06/119,563.65
  6. Step 6: Final answer
    x = 125,390.09

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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.