Home / 136,428.10-204,664.55-42,911.30

Finding the Fourth Proportional to 136,428.10, 204,664.55 and 42,911.30

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Solution

The fourth proportional to 136,428.10, 204,664.55 and 42,911.30 is: 64,374.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,428.10 : 204,664.55 = 42,911.30 : x
  2. Step 2: Convert to fraction form
    136,428.10/204,664.55 = 42,911.30/x
  3. Step 3: Cross multiply
    136,428.10x = 204,664.55 × 42,911.30
  4. Step 4: Simplify right side
    136,428.10x = 8,782,421,904.42
  5. Step 5: Solve for x
    x = 8,782,421,904.42/136,428.10
  6. Step 6: Final answer
    x = 64,374.00

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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.