Home / 208,663.02-312,989.67-113,985.36

Finding the Fourth Proportional to 208,663.02, 312,989.67 and 113,985.36

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Solution

The fourth proportional to 208,663.02, 312,989.67 and 113,985.36 is: 170,975.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,663.02 : 312,989.67 = 113,985.36 : x
  2. Step 2: Convert to fraction form
    208,663.02/312,989.67 = 113,985.36/x
  3. Step 3: Cross multiply
    208,663.02x = 312,989.67 × 113,985.36
  4. Step 4: Simplify right side
    208,663.02x = 35,676,240,211.23
  5. Step 5: Solve for x
    x = 35,676,240,211.23/208,663.02
  6. Step 6: Final answer
    x = 170,975.39

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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.