Home / 145,967,758.98-201,436,041.06-78,986,717.46

Finding the Fourth Proportional to 145,967,758.98, 201,436,041.06 and 78,986,717.46

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Solution

The fourth proportional to 145,967,758.98, 201,436,041.06 and 78,986,717.46 is: 109,001,958.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967,758.98 : 201,436,041.06 = 78,986,717.46 : x
  2. Step 2: Convert to fraction form
    145,967,758.98/201,436,041.06 = 78,986,717.46/x
  3. Step 3: Cross multiply
    145,967,758.98x = 201,436,041.06 × 78,986,717.46
  4. Step 4: Simplify right side
    145,967,758.98x = 15,910,771,661,467,178
  5. Step 5: Solve for x
    x = 15,910,771,661,467,178/145,967,758.98
  6. Step 6: Final answer
    x = 109,001,958.88

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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.