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Finding the Fourth Proportional to 130,661.84, 180,368.51 and 88,277.78

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Solution

The fourth proportional to 130,661.84, 180,368.51 and 88,277.78 is: 121,860.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,661.84 : 180,368.51 = 88,277.78 : x
  2. Step 2: Convert to fraction form
    130,661.84/180,368.51 = 88,277.78/x
  3. Step 3: Cross multiply
    130,661.84x = 180,368.51 × 88,277.78
  4. Step 4: Simplify right side
    130,661.84x = 15,922,530,301.48
  5. Step 5: Solve for x
    x = 15,922,530,301.48/130,661.84
  6. Step 6: Final answer
    x = 121,860.61

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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.