Home / 112,128.30-167,864.40-74,730.60

Finding the Fourth Proportional to 112,128.30, 167,864.40 and 74,730.60

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Solution

The fourth proportional to 112,128.30, 167,864.40 and 74,730.60 is: 111,877.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,128.30 : 167,864.40 = 74,730.60 : x
  2. Step 2: Convert to fraction form
    112,128.30/167,864.40 = 74,730.60/x
  3. Step 3: Cross multiply
    112,128.30x = 167,864.40 × 74,730.60
  4. Step 4: Simplify right side
    112,128.30x = 12,544,607,330.64
  5. Step 5: Solve for x
    x = 12,544,607,330.64/112,128.30
  6. Step 6: Final answer
    x = 111,877.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.