Home / 111,478.11-153,829.63-66,148.28

Finding the Fourth Proportional to 111,478.11, 153,829.63 and 66,148.28

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Solution

The fourth proportional to 111,478.11, 153,829.63 and 66,148.28 is: 91,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,478.11 : 153,829.63 = 66,148.28 : x
  2. Step 2: Convert to fraction form
    111,478.11/153,829.63 = 66,148.28/x
  3. Step 3: Cross multiply
    111,478.11x = 153,829.63 × 66,148.28
  4. Step 4: Simplify right side
    111,478.11x = 10,175,565,437.54
  5. Step 5: Solve for x
    x = 10,175,565,437.54/111,478.11
  6. Step 6: Final answer
    x = 91,278.60

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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.