Home / 112,340.90-155,007.60-71,521.36

Finding the Fourth Proportional to 112,340.90, 155,007.60 and 71,521.36

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Solution

The fourth proportional to 112,340.90, 155,007.60 and 71,521.36 is: 98,684.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,340.90 : 155,007.60 = 71,521.36 : x
  2. Step 2: Convert to fraction form
    112,340.90/155,007.60 = 71,521.36/x
  3. Step 3: Cross multiply
    112,340.90x = 155,007.60 × 71,521.36
  4. Step 4: Simplify right side
    112,340.90x = 11,086,354,362.34
  5. Step 5: Solve for x
    x = 11,086,354,362.34/112,340.90
  6. Step 6: Final answer
    x = 98,684.93

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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.