Home / 209,482,946.35-289,064,718.36-129,002,144.10

Finding the Fourth Proportional to 209,482,946.35, 289,064,718.36 and 129,002,144.10

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Solution

The fourth proportional to 209,482,946.35, 289,064,718.36 and 129,002,144.10 is: 178,009,566.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,482,946.35 : 289,064,718.36 = 129,002,144.10 : x
  2. Step 2: Convert to fraction form
    209,482,946.35/289,064,718.36 = 129,002,144.10/x
  3. Step 3: Cross multiply
    209,482,946.35x = 289,064,718.36 × 129,002,144.10
  4. Step 4: Simplify right side
    209,482,946.35x = 37,289,968,452,102,632
  5. Step 5: Solve for x
    x = 37,289,968,452,102,632/209,482,946.35
  6. Step 6: Final answer
    x = 178,009,566.42

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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.