Home / 103,789.10-155,683.65-83,053.10

Finding the Fourth Proportional to 103,789.10, 155,683.65 and 83,053.10

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Solution

The fourth proportional to 103,789.10, 155,683.65 and 83,053.10 is: 124,579.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,789.10 : 155,683.65 = 83,053.10 : x
  2. Step 2: Convert to fraction form
    103,789.10/155,683.65 = 83,053.10/x
  3. Step 3: Cross multiply
    103,789.10x = 155,683.65 × 83,053.10
  4. Step 4: Simplify right side
    103,789.10x = 12,930,009,751.82
  5. Step 5: Solve for x
    x = 12,930,009,751.82/103,789.10
  6. Step 6: Final answer
    x = 124,579.65

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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.