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Finding the Fourth Proportional to 139,658.20, 210,005.70 and 116,848.60

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Solution

The fourth proportional to 139,658.20, 210,005.70 and 116,848.60 is: 175,706.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,658.20 : 210,005.70 = 116,848.60 : x
  2. Step 2: Convert to fraction form
    139,658.20/210,005.70 = 116,848.60/x
  3. Step 3: Cross multiply
    139,658.20x = 210,005.70 × 116,848.60
  4. Step 4: Simplify right side
    139,658.20x = 24,538,872,037.02
  5. Step 5: Solve for x
    x = 24,538,872,037.02/139,658.20
  6. Step 6: Final answer
    x = 175,706.63

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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.