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Finding the Fourth Proportional to 107,039.40, 160,364.70 and 65,437.80

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Solution

The fourth proportional to 107,039.40, 160,364.70 and 65,437.80 is: 98,037.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,039.40 : 160,364.70 = 65,437.80 : x
  2. Step 2: Convert to fraction form
    107,039.40/160,364.70 = 65,437.80/x
  3. Step 3: Cross multiply
    107,039.40x = 160,364.70 × 65,437.80
  4. Step 4: Simplify right side
    107,039.40x = 10,493,913,165.66
  5. Step 5: Solve for x
    x = 10,493,913,165.66/107,039.40
  6. Step 6: Final answer
    x = 98,037.85

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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.