Home / 145,967,809.50-201,436,111.08-78,986,768.40

Finding the Fourth Proportional to 145,967,809.50, 201,436,111.08 and 78,986,768.40

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Solution

The fourth proportional to 145,967,809.50, 201,436,111.08 and 78,986,768.40 is: 109,002,029.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967,809.50 : 201,436,111.08 = 78,986,768.40 : x
  2. Step 2: Convert to fraction form
    145,967,809.50/201,436,111.08 = 78,986,768.40/x
  3. Step 3: Cross multiply
    145,967,809.50x = 201,436,111.08 × 78,986,768.40
  4. Step 4: Simplify right side
    145,967,809.50x = 15,910,787,453,272,636
  5. Step 5: Solve for x
    x = 15,910,787,453,272,636/145,967,809.50
  6. Step 6: Final answer
    x = 109,002,029.34

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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.