Home / 122,421.20-183,631.80-108,136.40

Finding the Fourth Proportional to 122,421.20, 183,631.80 and 108,136.40

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Solution

The fourth proportional to 122,421.20, 183,631.80 and 108,136.40 is: 162,204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,421.20 : 183,631.80 = 108,136.40 : x
  2. Step 2: Convert to fraction form
    122,421.20/183,631.80 = 108,136.40/x
  3. Step 3: Cross multiply
    122,421.20x = 183,631.80 × 108,136.40
  4. Step 4: Simplify right side
    122,421.20x = 19,857,281,777.52
  5. Step 5: Solve for x
    x = 19,857,281,777.52/122,421.20
  6. Step 6: Final answer
    x = 162,204.60

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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.