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Finding the Fourth Proportional to 98,290.98, 147,435.26 and 69,320.30

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Solution

The fourth proportional to 98,290.98, 147,435.26 and 69,320.30 is: 103,979.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,290.98 : 147,435.26 = 69,320.30 : x
  2. Step 2: Convert to fraction form
    98,290.98/147,435.26 = 69,320.30/x
  3. Step 3: Cross multiply
    98,290.98x = 147,435.26 × 69,320.30
  4. Step 4: Simplify right side
    98,290.98x = 10,220,255,370.00
  5. Step 5: Solve for x
    x = 10,220,255,370.00/98,290.98
  6. Step 6: Final answer
    x = 103,979.59

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1.5x scale

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.