Home / 245,582.78-338,923.91-138,146.40

Finding the Fourth Proportional to 245,582.78, 338,923.91 and 138,146.40

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Solution

The fourth proportional to 245,582.78, 338,923.91 and 138,146.40 is: 190,653.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,582.78 : 338,923.91 = 138,146.40 : x
  2. Step 2: Convert to fraction form
    245,582.78/338,923.91 = 138,146.40/x
  3. Step 3: Cross multiply
    245,582.78x = 338,923.91 × 138,146.40
  4. Step 4: Simplify right side
    245,582.78x = 46,821,118,385.79
  5. Step 5: Solve for x
    x = 46,821,118,385.79/245,582.78
  6. Step 6: Final answer
    x = 190,653.10

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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.