Home / 210,168.18-315,140.94-91,701.18

Finding the Fourth Proportional to 210,168.18, 315,140.94 and 91,701.18

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Solution

The fourth proportional to 210,168.18, 315,140.94 and 91,701.18 is: 137,503.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,168.18 : 315,140.94 = 91,701.18 : x
  2. Step 2: Convert to fraction form
    210,168.18/315,140.94 = 91,701.18/x
  3. Step 3: Cross multiply
    210,168.18x = 315,140.94 × 91,701.18
  4. Step 4: Simplify right side
    210,168.18x = 28,898,796,064.31
  5. Step 5: Solve for x
    x = 28,898,796,064.31/210,168.18
  6. Step 6: Final answer
    x = 137,503.19

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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.