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Finding the Fourth Proportional to 199,485.68, 275,252.54 and 118,920.69

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Solution

The fourth proportional to 199,485.68, 275,252.54 and 118,920.69 is: 164,088.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,485.68 : 275,252.54 = 118,920.69 : x
  2. Step 2: Convert to fraction form
    199,485.68/275,252.54 = 118,920.69/x
  3. Step 3: Cross multiply
    199,485.68x = 275,252.54 × 118,920.69
  4. Step 4: Simplify right side
    199,485.68x = 32,733,221,386.45
  5. Step 5: Solve for x
    x = 32,733,221,386.45/199,485.68
  6. Step 6: Final answer
    x = 164,088.08

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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.