Home / 111,478.41-153,830.03-66,148.59

Finding the Fourth Proportional to 111,478.41, 153,830.03 and 66,148.59

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Solution

The fourth proportional to 111,478.41, 153,830.03 and 66,148.59 is: 91,279.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,478.41 : 153,830.03 = 66,148.59 : x
  2. Step 2: Convert to fraction form
    111,478.41/153,830.03 = 66,148.59/x
  3. Step 3: Cross multiply
    111,478.41x = 153,830.03 × 66,148.59
  4. Step 4: Simplify right side
    111,478.41x = 10,175,639,253.41
  5. Step 5: Solve for x
    x = 10,175,639,253.41/111,478.41
  6. Step 6: Final answer
    x = 91,279.01

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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.