Home / 138,673,813.60-208,010,720.40-104,409,647.20

Finding the Fourth Proportional to 138,673,813.60, 208,010,720.40 and 104,409,647.20

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Solution

The fourth proportional to 138,673,813.60, 208,010,720.40 and 104,409,647.20 is: 156,614,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,673,813.60 : 208,010,720.40 = 104,409,647.20 : x
  2. Step 2: Convert to fraction form
    138,673,813.60/208,010,720.40 = 104,409,647.20/x
  3. Step 3: Cross multiply
    138,673,813.60x = 208,010,720.40 × 104,409,647.20
  4. Step 4: Simplify right side
    138,673,813.60x = 21,718,325,930,781,844
  5. Step 5: Solve for x
    x = 21,718,325,930,781,844/138,673,813.60
  6. Step 6: Final answer
    x = 156,614,470.80

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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.