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Finding the Fourth Proportional to 109,206.80, 163,810.20 and 39,088.40

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Solution

The fourth proportional to 109,206.80, 163,810.20 and 39,088.40 is: 58,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,206.80 : 163,810.20 = 39,088.40 : x
  2. Step 2: Convert to fraction form
    109,206.80/163,810.20 = 39,088.40/x
  3. Step 3: Cross multiply
    109,206.80x = 163,810.20 × 39,088.40
  4. Step 4: Simplify right side
    109,206.80x = 6,403,078,621.68
  5. Step 5: Solve for x
    x = 6,403,078,621.68/109,206.80
  6. Step 6: Final answer
    x = 58,632.60

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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.