Home / 111,509.40-153,812.98-66,155.26

Finding the Fourth Proportional to 111,509.40, 153,812.98 and 66,155.26

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Solution

The fourth proportional to 111,509.40, 153,812.98 and 66,155.26 is: 91,252.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,509.40 : 153,812.98 = 66,155.26 : x
  2. Step 2: Convert to fraction form
    111,509.40/153,812.98 = 66,155.26/x
  3. Step 3: Cross multiply
    111,509.40x = 153,812.98 × 66,155.26
  4. Step 4: Simplify right side
    111,509.40x = 10,175,537,683.27
  5. Step 5: Solve for x
    x = 10,175,537,683.27/111,509.40
  6. Step 6: Final answer
    x = 91,252.73

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1.5x scale

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.