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Finding the Fourth Proportional to 173,977.60, 260,966.40 and 85,404.10

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Solution

The fourth proportional to 173,977.60, 260,966.40 and 85,404.10 is: 128,106.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,977.60 : 260,966.40 = 85,404.10 : x
  2. Step 2: Convert to fraction form
    173,977.60/260,966.40 = 85,404.10/x
  3. Step 3: Cross multiply
    173,977.60x = 260,966.40 × 85,404.10
  4. Step 4: Simplify right side
    173,977.60x = 22,287,600,522.24
  5. Step 5: Solve for x
    x = 22,287,600,522.24/173,977.60
  6. Step 6: Final answer
    x = 128,106.15

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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.