Home / 159,539.31-220,164.29-86,942.22

Finding the Fourth Proportional to 159,539.31, 220,164.29 and 86,942.22

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Solution

The fourth proportional to 159,539.31, 220,164.29 and 86,942.22 is: 119,980.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,539.31 : 220,164.29 = 86,942.22 : x
  2. Step 2: Convert to fraction form
    159,539.31/220,164.29 = 86,942.22/x
  3. Step 3: Cross multiply
    159,539.31x = 220,164.29 × 86,942.22
  4. Step 4: Simplify right side
    159,539.31x = 19,141,572,999.77
  5. Step 5: Solve for x
    x = 19,141,572,999.77/159,539.31
  6. Step 6: Final answer
    x = 119,980.29

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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.