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Finding the Fourth Proportional to 99,780.60, 149,670.90 and 96,281.40

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Solution

The fourth proportional to 99,780.60, 149,670.90 and 96,281.40 is: 144,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,780.60 : 149,670.90 = 96,281.40 : x
  2. Step 2: Convert to fraction form
    99,780.60/149,670.90 = 96,281.40/x
  3. Step 3: Cross multiply
    99,780.60x = 149,670.90 × 96,281.40
  4. Step 4: Simplify right side
    99,780.60x = 14,410,523,791.26
  5. Step 5: Solve for x
    x = 14,410,523,791.26/99,780.60
  6. Step 6: Final answer
    x = 144,422.10

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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.