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Finding the Fourth Proportional to 160,397.58, 240,487.01 and 81,359.40

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Solution

The fourth proportional to 160,397.58, 240,487.01 and 81,359.40 is: 121,983.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,397.58 : 240,487.01 = 81,359.40 : x
  2. Step 2: Convert to fraction form
    160,397.58/240,487.01 = 81,359.40/x
  3. Step 3: Cross multiply
    160,397.58x = 240,487.01 × 81,359.40
  4. Step 4: Simplify right side
    160,397.58x = 19,565,878,739.69
  5. Step 5: Solve for x
    x = 19,565,878,739.69/160,397.58
  6. Step 6: Final answer
    x = 121,983.63

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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.