Home / 130,021.50-179,429.67-70,405.50

Finding the Fourth Proportional to 130,021.50, 179,429.67 and 70,405.50

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Solution

The fourth proportional to 130,021.50, 179,429.67 and 70,405.50 is: 97,159.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,021.50 : 179,429.67 = 70,405.50 : x
  2. Step 2: Convert to fraction form
    130,021.50/179,429.67 = 70,405.50/x
  3. Step 3: Cross multiply
    130,021.50x = 179,429.67 × 70,405.50
  4. Step 4: Simplify right side
    130,021.50x = 12,632,835,631.19
  5. Step 5: Solve for x
    x = 12,632,835,631.19/130,021.50
  6. Step 6: Final answer
    x = 97,159.59

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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.