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Finding the Fourth Proportional to 89,968.40, 134,837.40 and 69,088.40

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Solution

The fourth proportional to 89,968.40, 134,837.40 and 69,088.40 is: 103,544.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,968.40 : 134,837.40 = 69,088.40 : x
  2. Step 2: Convert to fraction form
    89,968.40/134,837.40 = 69,088.40/x
  3. Step 3: Cross multiply
    89,968.40x = 134,837.40 × 69,088.40
  4. Step 4: Simplify right side
    89,968.40x = 9,315,700,226.16
  5. Step 5: Solve for x
    x = 9,315,700,226.16/89,968.40
  6. Step 6: Final answer
    x = 103,544.14

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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.