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Finding the Fourth Proportional to 119,999.79, 165,598.65 and 66,288.54

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Solution

The fourth proportional to 119,999.79, 165,598.65 and 66,288.54 is: 91,477.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,999.79 : 165,598.65 = 66,288.54 : x
  2. Step 2: Convert to fraction form
    119,999.79/165,598.65 = 66,288.54/x
  3. Step 3: Cross multiply
    119,999.79x = 165,598.65 × 66,288.54
  4. Step 4: Simplify right side
    119,999.79x = 10,977,292,734.47
  5. Step 5: Solve for x
    x = 10,977,292,734.47/119,999.79
  6. Step 6: Final answer
    x = 91,477.60

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1.5x scale

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.