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Finding the Fourth Proportional to 130,354, 179,888.52 and 70,738

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Solution

The fourth proportional to 130,354, 179,888.52 and 70,738 is: 97,618.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,354 : 179,888.52 = 70,738 : x
  2. Step 2: Convert to fraction form
    130,354/179,888.52 = 70,738/x
  3. Step 3: Cross multiply
    130,354x = 179,888.52 × 70,738
  4. Step 4: Simplify right side
    130,354x = 12,724,954,127.76
  5. Step 5: Solve for x
    x = 12,724,954,127.76/130,354
  6. Step 6: Final answer
    x = 97,618.44

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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.