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Finding the Fourth Proportional to 109,987.68, 151,783.12 and 59,686.68

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Solution

The fourth proportional to 109,987.68, 151,783.12 and 59,686.68 is: 82,367.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,987.68 : 151,783.12 = 59,686.68 : x
  2. Step 2: Convert to fraction form
    109,987.68/151,783.12 = 59,686.68/x
  3. Step 3: Cross multiply
    109,987.68x = 151,783.12 × 59,686.68
  4. Step 4: Simplify right side
    109,987.68x = 9,059,430,512.84
  5. Step 5: Solve for x
    x = 9,059,430,512.84/109,987.68
  6. Step 6: Final answer
    x = 82,367.68

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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.