Home / 115,681.38-159,639.18-64,693.53

Finding the Fourth Proportional to 115,681.38, 159,639.18 and 64,693.53

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Solution

The fourth proportional to 115,681.38, 159,639.18 and 64,693.53 is: 89,276.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,681.38 : 159,639.18 = 64,693.53 : x
  2. Step 2: Convert to fraction form
    115,681.38/159,639.18 = 64,693.53/x
  3. Step 3: Cross multiply
    115,681.38x = 159,639.18 × 64,693.53
  4. Step 4: Simplify right side
    115,681.38x = 10,327,622,080.51
  5. Step 5: Solve for x
    x = 10,327,622,080.51/115,681.38
  6. Step 6: Final answer
    x = 89,276.44

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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.