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Finding the Fourth Proportional to 140,289.52, 193,639.80 and 89,303.80

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Solution

The fourth proportional to 140,289.52, 193,639.80 and 89,303.80 is: 123,264.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,289.52 : 193,639.80 = 89,303.80 : x
  2. Step 2: Convert to fraction form
    140,289.52/193,639.80 = 89,303.80/x
  3. Step 3: Cross multiply
    140,289.52x = 193,639.80 × 89,303.80
  4. Step 4: Simplify right side
    140,289.52x = 17,292,769,971.24
  5. Step 5: Solve for x
    x = 17,292,769,971.24/140,289.52
  6. Step 6: Final answer
    x = 123,264.87

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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.