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Finding the Fourth Proportional to 139,775.60, 192,848.20 and 126,303.60

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Solution

The fourth proportional to 139,775.60, 192,848.20 and 126,303.60 is: 174,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,775.60 : 192,848.20 = 126,303.60 : x
  2. Step 2: Convert to fraction form
    139,775.60/192,848.20 = 126,303.60/x
  3. Step 3: Cross multiply
    139,775.60x = 192,848.20 × 126,303.60
  4. Step 4: Simplify right side
    139,775.60x = 24,357,421,913.52
  5. Step 5: Solve for x
    x = 24,357,421,913.52/139,775.60
  6. Step 6: Final answer
    x = 174,260.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.