Home / 142,920.10-214,226.55-54,139.30

Finding the Fourth Proportional to 142,920.10, 214,226.55 and 54,139.30

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Solution

The fourth proportional to 142,920.10, 214,226.55 and 54,139.30 is: 81,150.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,920.10 : 214,226.55 = 54,139.30 : x
  2. Step 2: Convert to fraction form
    142,920.10/214,226.55 = 54,139.30/x
  3. Step 3: Cross multiply
    142,920.10x = 214,226.55 × 54,139.30
  4. Step 4: Simplify right side
    142,920.10x = 11,598,075,458.42
  5. Step 5: Solve for x
    x = 11,598,075,458.42/142,920.10
  6. Step 6: Final answer
    x = 81,150.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.