Home / 159,905.40-240,011.70-81,108.60

Finding the Fourth Proportional to 159,905.40, 240,011.70 and 81,108.60

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Solution

The fourth proportional to 159,905.40, 240,011.70 and 81,108.60 is: 121,740.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,905.40 : 240,011.70 = 81,108.60 : x
  2. Step 2: Convert to fraction form
    159,905.40/240,011.70 = 81,108.60/x
  3. Step 3: Cross multiply
    159,905.40x = 240,011.70 × 81,108.60
  4. Step 4: Simplify right side
    159,905.40x = 19,467,012,970.62
  5. Step 5: Solve for x
    x = 19,467,012,970.62/159,905.40
  6. Step 6: Final answer
    x = 121,740.81

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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.