Home / 143,068.50-197,434.53-79,406.75

Finding the Fourth Proportional to 143,068.50, 197,434.53 and 79,406.75

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Solution

The fourth proportional to 143,068.50, 197,434.53 and 79,406.75 is: 109,581.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,068.50 : 197,434.53 = 79,406.75 : x
  2. Step 2: Convert to fraction form
    143,068.50/197,434.53 = 79,406.75/x
  3. Step 3: Cross multiply
    143,068.50x = 197,434.53 × 79,406.75
  4. Step 4: Simplify right side
    143,068.50x = 15,677,634,858.66
  5. Step 5: Solve for x
    x = 15,677,634,858.66/143,068.50
  6. Step 6: Final answer
    x = 109,581.32

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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.