Home / 145,967,721.76-201,435,989.88-78,986,680.48

Finding the Fourth Proportional to 145,967,721.76, 201,435,989.88 and 78,986,680.48

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Solution

The fourth proportional to 145,967,721.76, 201,435,989.88 and 78,986,680.48 is: 109,001,907.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967,721.76 : 201,435,989.88 = 78,986,680.48 : x
  2. Step 2: Convert to fraction form
    145,967,721.76/201,435,989.88 = 78,986,680.48/x
  3. Step 3: Cross multiply
    145,967,721.76x = 201,435,989.88 × 78,986,680.48
  4. Step 4: Simplify right side
    145,967,721.76x = 15,910,760,170,372,068
  5. Step 5: Solve for x
    x = 15,910,760,170,372,068/145,967,721.76
  6. Step 6: Final answer
    x = 109,001,907.95

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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.