Home / 145,967,756.62-201,436,037.78-78,986,715.07

Finding the Fourth Proportional to 145,967,756.62, 201,436,037.78 and 78,986,715.07

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Solution

The fourth proportional to 145,967,756.62, 201,436,037.78 and 78,986,715.07 is: 109,001,955.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967,756.62 : 201,436,037.78 = 78,986,715.07 : x
  2. Step 2: Convert to fraction form
    145,967,756.62/201,436,037.78 = 78,986,715.07/x
  3. Step 3: Cross multiply
    145,967,756.62x = 201,436,037.78 × 78,986,715.07
  4. Step 4: Simplify right side
    145,967,756.62x = 15,910,770,920,761,148
  5. Step 5: Solve for x
    x = 15,910,770,920,761,148/145,967,756.62
  6. Step 6: Final answer
    x = 109,001,955.57

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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.