Home / 111,157.12-153,395.38-63,411.28

Finding the Fourth Proportional to 111,157.12, 153,395.38 and 63,411.28

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Solution

The fourth proportional to 111,157.12, 153,395.38 and 63,411.28 is: 87,506.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,157.12 : 153,395.38 = 63,411.28 : x
  2. Step 2: Convert to fraction form
    111,157.12/153,395.38 = 63,411.28/x
  3. Step 3: Cross multiply
    111,157.12x = 153,395.38 × 63,411.28
  4. Step 4: Simplify right side
    111,157.12x = 9,726,997,391.89
  5. Step 5: Solve for x
    x = 9,726,997,391.89/111,157.12
  6. Step 6: Final answer
    x = 87,506.74

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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.