Home / 101,280.55-139,769.98-55,961.45

Finding the Fourth Proportional to 101,280.55, 139,769.98 and 55,961.45

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Solution

The fourth proportional to 101,280.55, 139,769.98 and 55,961.45 is: 77,228.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,280.55 : 139,769.98 = 55,961.45 : x
  2. Step 2: Convert to fraction form
    101,280.55/139,769.98 = 55,961.45/x
  3. Step 3: Cross multiply
    101,280.55x = 139,769.98 × 55,961.45
  4. Step 4: Simplify right side
    101,280.55x = 7,821,731,393.74
  5. Step 5: Solve for x
    x = 7,821,731,393.74/101,280.55
  6. Step 6: Final answer
    x = 77,228.36

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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.