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Finding the Fourth Proportional to 98,321.99, 135,695.88 and 55,886.90

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Solution

The fourth proportional to 98,321.99, 135,695.88 and 55,886.90 is: 77,130.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,321.99 : 135,695.88 = 55,886.90 : x
  2. Step 2: Convert to fraction form
    98,321.99/135,695.88 = 55,886.90/x
  3. Step 3: Cross multiply
    98,321.99x = 135,695.88 × 55,886.90
  4. Step 4: Simplify right side
    98,321.99x = 7,583,621,397.49
  5. Step 5: Solve for x
    x = 7,583,621,397.49/98,321.99
  6. Step 6: Final answer
    x = 77,130.47

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1.5x scale

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.