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Finding the Fourth Proportional to 130,672.84, 180,383.72 and 88,288.80

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Solution

The fourth proportional to 130,672.84, 180,383.72 and 88,288.80 is: 121,875.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,672.84 : 180,383.72 = 88,288.80 : x
  2. Step 2: Convert to fraction form
    130,672.84/180,383.72 = 88,288.80/x
  3. Step 3: Cross multiply
    130,672.84x = 180,383.72 × 88,288.80
  4. Step 4: Simplify right side
    130,672.84x = 15,925,862,178.34
  5. Step 5: Solve for x
    x = 15,925,862,178.34/130,672.84
  6. Step 6: Final answer
    x = 121,875.84

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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.