Home / 213,155.04-294,156.38-117,661.78

Finding the Fourth Proportional to 213,155.04, 294,156.38 and 117,661.78

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Solution

The fourth proportional to 213,155.04, 294,156.38 and 117,661.78 is: 162,374.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,155.04 : 294,156.38 = 117,661.78 : x
  2. Step 2: Convert to fraction form
    213,155.04/294,156.38 = 117,661.78/x
  3. Step 3: Cross multiply
    213,155.04x = 294,156.38 × 117,661.78
  4. Step 4: Simplify right side
    213,155.04x = 34,610,963,269.16
  5. Step 5: Solve for x
    x = 34,610,963,269.16/213,155.04
  6. Step 6: Final answer
    x = 162,374.59

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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.