Home / 143,348.55-197,803.80-78,807.15

Finding the Fourth Proportional to 143,348.55, 197,803.80 and 78,807.15

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Solution

The fourth proportional to 143,348.55, 197,803.80 and 78,807.15 is: 108,744.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,348.55 : 197,803.80 = 78,807.15 : x
  2. Step 2: Convert to fraction form
    143,348.55/197,803.80 = 78,807.15/x
  3. Step 3: Cross multiply
    143,348.55x = 197,803.80 × 78,807.15
  4. Step 4: Simplify right side
    143,348.55x = 15,588,353,737.17
  5. Step 5: Solve for x
    x = 15,588,353,737.17/143,348.55
  6. Step 6: Final answer
    x = 108,744.41

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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.