Home / 143,390.95-197,878.30-79,728.19

Finding the Fourth Proportional to 143,390.95, 197,878.30 and 79,728.19

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Solution

The fourth proportional to 143,390.95, 197,878.30 and 79,728.19 is: 110,024.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,390.95 : 197,878.30 = 79,728.19 : x
  2. Step 2: Convert to fraction form
    143,390.95/197,878.30 = 79,728.19/x
  3. Step 3: Cross multiply
    143,390.95x = 197,878.30 × 79,728.19
  4. Step 4: Simplify right side
    143,390.95x = 15,776,478,005.26
  5. Step 5: Solve for x
    x = 15,776,478,005.26/143,390.95
  6. Step 6: Final answer
    x = 110,024.23

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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.