Home / 130,364.49-179,905.55-85,071.45

Finding the Fourth Proportional to 130,364.49, 179,905.55 and 85,071.45

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Solution

The fourth proportional to 130,364.49, 179,905.55 and 85,071.45 is: 117,400.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,364.49 : 179,905.55 = 85,071.45 : x
  2. Step 2: Convert to fraction form
    130,364.49/179,905.55 = 85,071.45/x
  3. Step 3: Cross multiply
    130,364.49x = 179,905.55 × 85,071.45
  4. Step 4: Simplify right side
    130,364.49x = 15,304,826,001.55
  5. Step 5: Solve for x
    x = 15,304,826,001.55/130,364.49
  6. Step 6: Final answer
    x = 117,400.27

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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.