Home / 103,423.60-142,720.04-63,204.64

Finding the Fourth Proportional to 103,423.60, 142,720.04 and 63,204.64

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Solution

The fourth proportional to 103,423.60, 142,720.04 and 63,204.64 is: 87,219.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,423.60 : 142,720.04 = 63,204.64 : x
  2. Step 2: Convert to fraction form
    103,423.60/142,720.04 = 63,204.64/x
  3. Step 3: Cross multiply
    103,423.60x = 142,720.04 × 63,204.64
  4. Step 4: Simplify right side
    103,423.60x = 9,020,568,748.99
  5. Step 5: Solve for x
    x = 9,020,568,748.99/103,423.60
  6. Step 6: Final answer
    x = 87,219.64

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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.