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Finding the Fourth Proportional to 104,658.40, 156,987.60 and 42,328.90

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Solution

The fourth proportional to 104,658.40, 156,987.60 and 42,328.90 is: 63,493.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,658.40 : 156,987.60 = 42,328.90 : x
  2. Step 2: Convert to fraction form
    104,658.40/156,987.60 = 42,328.90/x
  3. Step 3: Cross multiply
    104,658.40x = 156,987.60 × 42,328.90
  4. Step 4: Simplify right side
    104,658.40x = 6,645,112,421.64
  5. Step 5: Solve for x
    x = 6,645,112,421.64/104,658.40
  6. Step 6: Final answer
    x = 63,493.35

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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.