Home / 205,128.60-307,779.30-111,701.40

Finding the Fourth Proportional to 205,128.60, 307,779.30 and 111,701.40

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Solution

The fourth proportional to 205,128.60, 307,779.30 and 111,701.40 is: 167,599.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,128.60 : 307,779.30 = 111,701.40 : x
  2. Step 2: Convert to fraction form
    205,128.60/307,779.30 = 111,701.40/x
  3. Step 3: Cross multiply
    205,128.60x = 307,779.30 × 111,701.40
  4. Step 4: Simplify right side
    205,128.60x = 34,379,378,701.02
  5. Step 5: Solve for x
    x = 34,379,378,701.02/205,128.60
  6. Step 6: Final answer
    x = 167,599.15

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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.