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Finding the Fourth Proportional to 130,368, 179,911.68 and 70,755.84

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Solution

The fourth proportional to 130,368, 179,911.68 and 70,755.84 is: 97,645.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,368 : 179,911.68 = 70,755.84 : x
  2. Step 2: Convert to fraction form
    130,368/179,911.68 = 70,755.84/x
  3. Step 3: Cross multiply
    130,368x = 179,911.68 × 70,755.84
  4. Step 4: Simplify right side
    130,368x = 12,729,802,044.21
  5. Step 5: Solve for x
    x = 12,729,802,044.21/130,368
  6. Step 6: Final answer
    x = 97,645.14

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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.