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Finding the Fourth Proportional to 168,779.80, 253,169.70 and 166,155.40

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Solution

The fourth proportional to 168,779.80, 253,169.70 and 166,155.40 is: 249,233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,779.80 : 253,169.70 = 166,155.40 : x
  2. Step 2: Convert to fraction form
    168,779.80/253,169.70 = 166,155.40/x
  3. Step 3: Cross multiply
    168,779.80x = 253,169.70 × 166,155.40
  4. Step 4: Simplify right side
    168,779.80x = 42,065,512,771.38
  5. Step 5: Solve for x
    x = 42,065,512,771.38/168,779.80
  6. Step 6: Final answer
    x = 249,233.10

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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.