Home / 215,916.05-297,964.69-120,428.93

Finding the Fourth Proportional to 215,916.05, 297,964.69 and 120,428.93

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Solution

The fourth proportional to 215,916.05, 297,964.69 and 120,428.93 is: 166,192.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,916.05 : 297,964.69 = 120,428.93 : x
  2. Step 2: Convert to fraction form
    215,916.05/297,964.69 = 120,428.93/x
  3. Step 3: Cross multiply
    215,916.05x = 297,964.69 × 120,428.93
  4. Step 4: Simplify right side
    215,916.05x = 35,883,569,238.32
  5. Step 5: Solve for x
    x = 35,883,569,238.32/215,916.05
  6. Step 6: Final answer
    x = 166,192.23

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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.