Home / 115,973.76-160,044.40-64,986.60

Finding the Fourth Proportional to 115,973.76, 160,044.40 and 64,986.60

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Solution

The fourth proportional to 115,973.76, 160,044.40 and 64,986.60 is: 89,681.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,973.76 : 160,044.40 = 64,986.60 : x
  2. Step 2: Convert to fraction form
    115,973.76/160,044.40 = 64,986.60/x
  3. Step 3: Cross multiply
    115,973.76x = 160,044.40 × 64,986.60
  4. Step 4: Simplify right side
    115,973.76x = 10,400,741,405.04
  5. Step 5: Solve for x
    x = 10,400,741,405.04/115,973.76
  6. Step 6: Final answer
    x = 89,681.85

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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.