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Finding the Fourth Proportional to 130,998.60, 196,368.30 and 64,384.20

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Solution

The fourth proportional to 130,998.60, 196,368.30 and 64,384.20 is: 96,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,998.60 : 196,368.30 = 64,384.20 : x
  2. Step 2: Convert to fraction form
    130,998.60/196,368.30 = 64,384.20/x
  3. Step 3: Cross multiply
    130,998.60x = 196,368.30 × 64,384.20
  4. Step 4: Simplify right side
    130,998.60x = 12,643,015,900.86
  5. Step 5: Solve for x
    x = 12,643,015,900.86/130,998.60
  6. Step 6: Final answer
    x = 96,512.60

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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.