Home / 153,868.31-212,450.75-99,452.68

Finding the Fourth Proportional to 153,868.31, 212,450.75 and 99,452.68

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Solution

The fourth proportional to 153,868.31, 212,450.75 and 99,452.68 is: 137,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,868.31 : 212,450.75 = 99,452.68 : x
  2. Step 2: Convert to fraction form
    153,868.31/212,450.75 = 99,452.68/x
  3. Step 3: Cross multiply
    153,868.31x = 212,450.75 × 99,452.68
  4. Step 4: Simplify right side
    153,868.31x = 21,128,796,455.51
  5. Step 5: Solve for x
    x = 21,128,796,455.51/153,868.31
  6. Step 6: Final answer
    x = 137,317.40

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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.