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Finding the Fourth Proportional to 130,352, 179,885.76 and 70,736

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Solution

The fourth proportional to 130,352, 179,885.76 and 70,736 is: 97,615.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,352 : 179,885.76 = 70,736 : x
  2. Step 2: Convert to fraction form
    130,352/179,885.76 = 70,736/x
  3. Step 3: Cross multiply
    130,352x = 179,885.76 × 70,736
  4. Step 4: Simplify right side
    130,352x = 12,724,399,119.36
  5. Step 5: Solve for x
    x = 12,724,399,119.36/130,352
  6. Step 6: Final answer
    x = 97,615.68

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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.