Home / 208,048.04-312,080.98-81,715.66

Finding the Fourth Proportional to 208,048.04, 312,080.98 and 81,715.66

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Solution

The fourth proportional to 208,048.04, 312,080.98 and 81,715.66 is: 122,576.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,048.04 : 312,080.98 = 81,715.66 : x
  2. Step 2: Convert to fraction form
    208,048.04/312,080.98 = 81,715.66/x
  3. Step 3: Cross multiply
    208,048.04x = 312,080.98 × 81,715.66
  4. Step 4: Simplify right side
    208,048.04x = 25,501,903,254.15
  5. Step 5: Solve for x
    x = 25,501,903,254.15/208,048.04
  6. Step 6: Final answer
    x = 122,576.99

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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.