Home / 151,739.68-209,426.32-88,130.72

Finding the Fourth Proportional to 151,739.68, 209,426.32 and 88,130.72

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Solution

The fourth proportional to 151,739.68, 209,426.32 and 88,130.72 is: 121,635.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,739.68 : 209,426.32 = 88,130.72 : x
  2. Step 2: Convert to fraction form
    151,739.68/209,426.32 = 88,130.72/x
  3. Step 3: Cross multiply
    151,739.68x = 209,426.32 × 88,130.72
  4. Step 4: Simplify right side
    151,739.68x = 18,456,892,368.55
  5. Step 5: Solve for x
    x = 18,456,892,368.55/151,739.68
  6. Step 6: Final answer
    x = 121,635.24

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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.