Home / 109,320.40-163,980.60-39,206.80

Finding the Fourth Proportional to 109,320.40, 163,980.60 and 39,206.80

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Solution

The fourth proportional to 109,320.40, 163,980.60 and 39,206.80 is: 58,810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,320.40 : 163,980.60 = 39,206.80 : x
  2. Step 2: Convert to fraction form
    109,320.40/163,980.60 = 39,206.80/x
  3. Step 3: Cross multiply
    109,320.40x = 163,980.60 × 39,206.80
  4. Step 4: Simplify right side
    109,320.40x = 6,429,154,588.08
  5. Step 5: Solve for x
    x = 6,429,154,588.08/109,320.40
  6. Step 6: Final answer
    x = 58,810.20

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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.