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Finding the Fourth Proportional to 98,600.81, 147,901.21 and 90,047.21

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Solution

The fourth proportional to 98,600.81, 147,901.21 and 90,047.21 is: 135,070.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,600.81 : 147,901.21 = 90,047.21 : x
  2. Step 2: Convert to fraction form
    98,600.81/147,901.21 = 90,047.21/x
  3. Step 3: Cross multiply
    98,600.81x = 147,901.21 × 90,047.21
  4. Step 4: Simplify right side
    98,600.81x = 13,318,090,351.50
  5. Step 5: Solve for x
    x = 13,318,090,351.50/98,600.81
  6. Step 6: Final answer
    x = 135,070.81

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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.