Home / 211,603.20-317,145.60-93,148.80

Finding the Fourth Proportional to 211,603.20, 317,145.60 and 93,148.80

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Solution

The fourth proportional to 211,603.20, 317,145.60 and 93,148.80 is: 139,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,603.20 : 317,145.60 = 93,148.80 : x
  2. Step 2: Convert to fraction form
    211,603.20/317,145.60 = 93,148.80/x
  3. Step 3: Cross multiply
    211,603.20x = 317,145.60 × 93,148.80
  4. Step 4: Simplify right side
    211,603.20x = 29,541,732,065.28
  5. Step 5: Solve for x
    x = 29,541,732,065.28/211,603.20
  6. Step 6: Final answer
    x = 139,609.10

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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.