Home / 142,607.66-196,800.91-78,075.83

Finding the Fourth Proportional to 142,607.66, 196,800.91 and 78,075.83

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Solution

The fourth proportional to 142,607.66, 196,800.91 and 78,075.83 is: 107,745.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,607.66 : 196,800.91 = 78,075.83 : x
  2. Step 2: Convert to fraction form
    142,607.66/196,800.91 = 78,075.83/x
  3. Step 3: Cross multiply
    142,607.66x = 196,800.91 × 78,075.83
  4. Step 4: Simplify right side
    142,607.66x = 15,365,393,213.81
  5. Step 5: Solve for x
    x = 15,365,393,213.81/142,607.66
  6. Step 6: Final answer
    x = 107,745.92

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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.