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Finding the Fourth Proportional to 130,175, 179,641.50 and 70,559

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Solution

The fourth proportional to 130,175, 179,641.50 and 70,559 is: 97,371.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,175 : 179,641.50 = 70,559 : x
  2. Step 2: Convert to fraction form
    130,175/179,641.50 = 70,559/x
  3. Step 3: Cross multiply
    130,175x = 179,641.50 × 70,559
  4. Step 4: Simplify right side
    130,175x = 12,675,324,598.50
  5. Step 5: Solve for x
    x = 12,675,324,598.50/130,175
  6. Step 6: Final answer
    x = 97,371.42

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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.