Home / 112,455.64-155,316.30-76,583.32

Finding the Fourth Proportional to 112,455.64, 155,316.30 and 76,583.32

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Solution

The fourth proportional to 112,455.64, 155,316.30 and 76,583.32 is: 105,771.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,455.64 : 155,316.30 = 76,583.32 : x
  2. Step 2: Convert to fraction form
    112,455.64/155,316.30 = 76,583.32/x
  3. Step 3: Cross multiply
    112,455.64x = 155,316.30 × 76,583.32
  4. Step 4: Simplify right side
    112,455.64x = 11,894,637,904.12
  5. Step 5: Solve for x
    x = 11,894,637,904.12/112,455.64
  6. Step 6: Final answer
    x = 105,771.82

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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.