Home / 91,738.70-137,608.05-56,746.70

Finding the Fourth Proportional to 91,738.70, 137,608.05 and 56,746.70

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Solution

The fourth proportional to 91,738.70, 137,608.05 and 56,746.70 is: 85,120.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,738.70 : 137,608.05 = 56,746.70 : x
  2. Step 2: Convert to fraction form
    91,738.70/137,608.05 = 56,746.70/x
  3. Step 3: Cross multiply
    91,738.70x = 137,608.05 × 56,746.70
  4. Step 4: Simplify right side
    91,738.70x = 7,808,802,730.94
  5. Step 5: Solve for x
    x = 7,808,802,730.94/91,738.70
  6. Step 6: Final answer
    x = 85,120.05

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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.