Home / 142,808.50-197,075.73-79,155.87

Finding the Fourth Proportional to 142,808.50, 197,075.73 and 79,155.87

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Solution

The fourth proportional to 142,808.50, 197,075.73 and 79,155.87 is: 109,235.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,808.50 : 197,075.73 = 79,155.87 : x
  2. Step 2: Convert to fraction form
    142,808.50/197,075.73 = 79,155.87/x
  3. Step 3: Cross multiply
    142,808.50x = 197,075.73 × 79,155.87
  4. Step 4: Simplify right side
    142,808.50x = 15,599,700,864.04
  5. Step 5: Solve for x
    x = 15,599,700,864.04/142,808.50
  6. Step 6: Final answer
    x = 109,235.10

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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.