Home / 210,389.04-315,586.36-70,147.72

Finding the Fourth Proportional to 210,389.04, 315,586.36 and 70,147.72

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Solution

The fourth proportional to 210,389.04, 315,586.36 and 70,147.72 is: 105,222.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,389.04 : 315,586.36 = 70,147.72 : x
  2. Step 2: Convert to fraction form
    210,389.04/315,586.36 = 70,147.72/x
  3. Step 3: Cross multiply
    210,389.04x = 315,586.36 × 70,147.72
  4. Step 4: Simplify right side
    210,389.04x = 22,137,663,617.10
  5. Step 5: Solve for x
    x = 22,137,663,617.10/210,389.04
  6. Step 6: Final answer
    x = 105,222.51

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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.