Home / 98,678.54-147,995.49-45,319.22

Finding the Fourth Proportional to 98,678.54, 147,995.49 and 45,319.22

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Solution

The fourth proportional to 98,678.54, 147,995.49 and 45,319.22 is: 67,968.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,678.54 : 147,995.49 = 45,319.22 : x
  2. Step 2: Convert to fraction form
    98,678.54/147,995.49 = 45,319.22/x
  3. Step 3: Cross multiply
    98,678.54x = 147,995.49 × 45,319.22
  4. Step 4: Simplify right side
    98,678.54x = 6,707,040,931.10
  5. Step 5: Solve for x
    x = 6,707,040,931.10/98,678.54
  6. Step 6: Final answer
    x = 67,968.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.