Home / 112,121.60-154,728.53-61,135.17

Finding the Fourth Proportional to 112,121.60, 154,728.53 and 61,135.17

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Solution

The fourth proportional to 112,121.60, 154,728.53 and 61,135.17 is: 84,366.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,121.60 : 154,728.53 = 61,135.17 : x
  2. Step 2: Convert to fraction form
    112,121.60/154,728.53 = 61,135.17/x
  3. Step 3: Cross multiply
    112,121.60x = 154,728.53 × 61,135.17
  4. Step 4: Simplify right side
    112,121.60x = 9,459,354,985.40
  5. Step 5: Solve for x
    x = 9,459,354,985.40/112,121.60
  6. Step 6: Final answer
    x = 84,366.93

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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.