Home / 113,020.12-155,973.90-62,720.20

Finding the Fourth Proportional to 113,020.12, 155,973.90 and 62,720.20

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Solution

The fourth proportional to 113,020.12, 155,973.90 and 62,720.20 is: 86,557.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,020.12 : 155,973.90 = 62,720.20 : x
  2. Step 2: Convert to fraction form
    113,020.12/155,973.90 = 62,720.20/x
  3. Step 3: Cross multiply
    113,020.12x = 155,973.90 × 62,720.20
  4. Step 4: Simplify right side
    113,020.12x = 9,782,714,202.78
  5. Step 5: Solve for x
    x = 9,782,714,202.78/113,020.12
  6. Step 6: Final answer
    x = 86,557.28

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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.