Home / 111,636.19-153,973.07-77,238.16

Finding the Fourth Proportional to 111,636.19, 153,973.07 and 77,238.16

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Solution

The fourth proportional to 111,636.19, 153,973.07 and 77,238.16 is: 106,529.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,636.19 : 153,973.07 = 77,238.16 : x
  2. Step 2: Convert to fraction form
    111,636.19/153,973.07 = 77,238.16/x
  3. Step 3: Cross multiply
    111,636.19x = 153,973.07 × 77,238.16
  4. Step 4: Simplify right side
    111,636.19x = 11,892,596,134.87
  5. Step 5: Solve for x
    x = 11,892,596,134.87/111,636.19
  6. Step 6: Final answer
    x = 106,529.93

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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.