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Finding the Fourth Proportional to 128,031.60, 192,468.10 and 118,783.33

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Solution

The fourth proportional to 128,031.60, 192,468.10 and 118,783.33 is: 178,565.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,031.60 : 192,468.10 = 118,783.33 : x
  2. Step 2: Convert to fraction form
    128,031.60/192,468.10 = 118,783.33/x
  3. Step 3: Cross multiply
    128,031.60x = 192,468.10 × 118,783.33
  4. Step 4: Simplify right side
    128,031.60x = 22,862,001,281.36
  5. Step 5: Solve for x
    x = 22,862,001,281.36/128,031.60
  6. Step 6: Final answer
    x = 178,565.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.