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Finding the Fourth Proportional to 208,145.58, 312,342.92 and 89,816.92

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Solution

The fourth proportional to 208,145.58, 312,342.92 and 89,816.92 is: 134,779.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,145.58 : 312,342.92 = 89,816.92 : x
  2. Step 2: Convert to fraction form
    208,145.58/312,342.92 = 89,816.92/x
  3. Step 3: Cross multiply
    208,145.58x = 312,342.92 × 89,816.92
  4. Step 4: Simplify right side
    208,145.58x = 28,053,679,058.21
  5. Step 5: Solve for x
    x = 28,053,679,058.21/208,145.58
  6. Step 6: Final answer
    x = 134,779.12

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1.5x scale

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.