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Finding the Fourth Proportional to 130,681.71, 180,395.81 and 88,297.65

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Solution

The fourth proportional to 130,681.71, 180,395.81 and 88,297.65 is: 121,887.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,681.71 : 180,395.81 = 88,297.65 : x
  2. Step 2: Convert to fraction form
    130,681.71/180,395.81 = 88,297.65/x
  3. Step 3: Cross multiply
    130,681.71x = 180,395.81 × 88,297.65
  4. Step 4: Simplify right side
    130,681.71x = 15,928,525,982.47
  5. Step 5: Solve for x
    x = 15,928,525,982.47/130,681.71
  6. Step 6: Final answer
    x = 121,887.95

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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.