Home / 111,478.32-153,829.94-66,148.50

Finding the Fourth Proportional to 111,478.32, 153,829.94 and 66,148.50

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Solution

The fourth proportional to 111,478.32, 153,829.94 and 66,148.50 is: 91,278.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,478.32 : 153,829.94 = 66,148.50 : x
  2. Step 2: Convert to fraction form
    111,478.32/153,829.94 = 66,148.50/x
  3. Step 3: Cross multiply
    111,478.32x = 153,829.94 × 66,148.50
  4. Step 4: Simplify right side
    111,478.32x = 10,175,619,455.35
  5. Step 5: Solve for x
    x = 10,175,619,455.35/111,478.32
  6. Step 6: Final answer
    x = 91,278.91

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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.