Home / 112,157.77-154,690.21-71,875.28

Finding the Fourth Proportional to 112,157.77, 154,690.21 and 71,875.28

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Solution

The fourth proportional to 112,157.77, 154,690.21 and 71,875.28 is: 99,131.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,157.77 : 154,690.21 = 71,875.28 : x
  2. Step 2: Convert to fraction form
    112,157.77/154,690.21 = 71,875.28/x
  3. Step 3: Cross multiply
    112,157.77x = 154,690.21 × 71,875.28
  4. Step 4: Simplify right side
    112,157.77x = 11,118,402,835.73
  5. Step 5: Solve for x
    x = 11,118,402,835.73/112,157.77
  6. Step 6: Final answer
    x = 99,131.81

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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.