Home / 209,788.48-289,486-124,893.92

Finding the Fourth Proportional to 209,788.48, 289,486 and 124,893.92

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Solution

The fourth proportional to 209,788.48, 289,486 and 124,893.92 is: 172,340.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,788.48 : 289,486 = 124,893.92 : x
  2. Step 2: Convert to fraction form
    209,788.48/289,486 = 124,893.92/x
  3. Step 3: Cross multiply
    209,788.48x = 289,486 × 124,893.92
  4. Step 4: Simplify right side
    209,788.48x = 36,155,041,325.12
  5. Step 5: Solve for x
    x = 36,155,041,325.12/209,788.48
  6. Step 6: Final answer
    x = 172,340.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.