Home / 210,030.70-314,964.15-91,621.30

Finding the Fourth Proportional to 210,030.70, 314,964.15 and 91,621.30

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Solution

The fourth proportional to 210,030.70, 314,964.15 and 91,621.30 is: 137,396.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,030.70 : 314,964.15 = 91,621.30 : x
  2. Step 2: Convert to fraction form
    210,030.70/314,964.15 = 91,621.30/x
  3. Step 3: Cross multiply
    210,030.70x = 314,964.15 × 91,621.30
  4. Step 4: Simplify right side
    210,030.70x = 28,857,424,876.40
  5. Step 5: Solve for x
    x = 28,857,424,876.40/210,030.70
  6. Step 6: Final answer
    x = 137,396.22

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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.