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Finding the Fourth Proportional to 97,808.40, 147,025.80 and 90,874.80

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Solution

The fourth proportional to 97,808.40, 147,025.80 and 90,874.80 is: 136,603.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,808.40 : 147,025.80 = 90,874.80 : x
  2. Step 2: Convert to fraction form
    97,808.40/147,025.80 = 90,874.80/x
  3. Step 3: Cross multiply
    97,808.40x = 147,025.80 × 90,874.80
  4. Step 4: Simplify right side
    97,808.40x = 13,360,940,169.84
  5. Step 5: Solve for x
    x = 13,360,940,169.84/97,808.40
  6. Step 6: Final answer
    x = 136,603.20

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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.