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Finding the Fourth Proportional to 109,210.80, 163,816.20 and 64,814.70

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Solution

The fourth proportional to 109,210.80, 163,816.20 and 64,814.70 is: 97,222.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,210.80 : 163,816.20 = 64,814.70 : x
  2. Step 2: Convert to fraction form
    109,210.80/163,816.20 = 64,814.70/x
  3. Step 3: Cross multiply
    109,210.80x = 163,816.20 × 64,814.70
  4. Step 4: Simplify right side
    109,210.80x = 10,617,697,858.14
  5. Step 5: Solve for x
    x = 10,617,697,858.14/109,210.80
  6. Step 6: Final answer
    x = 97,222.05

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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.