Home / 208,349.16-312,538.32-103,139.88

Finding the Fourth Proportional to 208,349.16, 312,538.32 and 103,139.88

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Solution

The fourth proportional to 208,349.16, 312,538.32 and 103,139.88 is: 154,717.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,349.16 : 312,538.32 = 103,139.88 : x
  2. Step 2: Convert to fraction form
    208,349.16/312,538.32 = 103,139.88/x
  3. Step 3: Cross multiply
    208,349.16x = 312,538.32 × 103,139.88
  4. Step 4: Simplify right side
    208,349.16x = 32,235,164,820.20
  5. Step 5: Solve for x
    x = 32,235,164,820.20/208,349.16
  6. Step 6: Final answer
    x = 154,717.04

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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.