Home / 208,315.53-312,487.98-103,106.25

Finding the Fourth Proportional to 208,315.53, 312,487.98 and 103,106.25

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Solution

The fourth proportional to 208,315.53, 312,487.98 and 103,106.25 is: 154,666.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,315.53 : 312,487.98 = 103,106.25 : x
  2. Step 2: Convert to fraction form
    208,315.53/312,487.98 = 103,106.25/x
  3. Step 3: Cross multiply
    208,315.53x = 312,487.98 × 103,106.25
  4. Step 4: Simplify right side
    208,315.53x = 32,219,463,401.23
  5. Step 5: Solve for x
    x = 32,219,463,401.23/208,315.53
  6. Step 6: Final answer
    x = 154,666.64

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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.