Home / 155,012.68-213,982.50-104,779.72

Finding the Fourth Proportional to 155,012.68, 213,982.50 and 104,779.72

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Solution

The fourth proportional to 155,012.68, 213,982.50 and 104,779.72 is: 144,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,012.68 : 213,982.50 = 104,779.72 : x
  2. Step 2: Convert to fraction form
    155,012.68/213,982.50 = 104,779.72/x
  3. Step 3: Cross multiply
    155,012.68x = 213,982.50 × 104,779.72
  4. Step 4: Simplify right side
    155,012.68x = 22,421,026,434.90
  5. Step 5: Solve for x
    x = 22,421,026,434.90/155,012.68
  6. Step 6: Final answer
    x = 144,639.95

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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.