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Finding the Fourth Proportional to 130,929.71, 180,752.04 and 88,134.20

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Solution

The fourth proportional to 130,929.71, 180,752.04 and 88,134.20 is: 121,671.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,929.71 : 180,752.04 = 88,134.20 : x
  2. Step 2: Convert to fraction form
    130,929.71/180,752.04 = 88,134.20/x
  3. Step 3: Cross multiply
    130,929.71x = 180,752.04 × 88,134.20
  4. Step 4: Simplify right side
    130,929.71x = 15,930,436,443.77
  5. Step 5: Solve for x
    x = 15,930,436,443.77/130,929.71
  6. Step 6: Final answer
    x = 121,671.67

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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.