Home / 210,215.70-315,226.35-91,826.10

Finding the Fourth Proportional to 210,215.70, 315,226.35 and 91,826.10

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Solution

The fourth proportional to 210,215.70, 315,226.35 and 91,826.10 is: 137,696.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,215.70 : 315,226.35 = 91,826.10 : x
  2. Step 2: Convert to fraction form
    210,215.70/315,226.35 = 91,826.10/x
  3. Step 3: Cross multiply
    210,215.70x = 315,226.35 × 91,826.10
  4. Step 4: Simplify right side
    210,215.70x = 28,946,006,337.74
  5. Step 5: Solve for x
    x = 28,946,006,337.74/210,215.70
  6. Step 6: Final answer
    x = 137,696.69

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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.