Home / 142,607.10-196,800.13-78,075.26

Finding the Fourth Proportional to 142,607.10, 196,800.13 and 78,075.26

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Solution

The fourth proportional to 142,607.10, 196,800.13 and 78,075.26 is: 107,745.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,607.10 : 196,800.13 = 78,075.26 : x
  2. Step 2: Convert to fraction form
    142,607.10/196,800.13 = 78,075.26/x
  3. Step 3: Cross multiply
    142,607.10x = 196,800.13 × 78,075.26
  4. Step 4: Simplify right side
    142,607.10x = 15,365,221,722.88
  5. Step 5: Solve for x
    x = 15,365,221,722.88/142,607.10
  6. Step 6: Final answer
    x = 107,745.14

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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.