Home / 205,038.40-307,557.60-72,068.80

Finding the Fourth Proportional to 205,038.40, 307,557.60 and 72,068.80

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Solution

The fourth proportional to 205,038.40, 307,557.60 and 72,068.80 is: 108,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,038.40 : 307,557.60 = 72,068.80 : x
  2. Step 2: Convert to fraction form
    205,038.40/307,557.60 = 72,068.80/x
  3. Step 3: Cross multiply
    205,038.40x = 307,557.60 × 72,068.80
  4. Step 4: Simplify right side
    205,038.40x = 22,165,307,162.88
  5. Step 5: Solve for x
    x = 22,165,307,162.88/205,038.40
  6. Step 6: Final answer
    x = 108,103.20

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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.