Home / 130,488.86-180,066.09-76,763.49

Finding the Fourth Proportional to 130,488.86, 180,066.09 and 76,763.49

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Solution

The fourth proportional to 130,488.86, 180,066.09 and 76,763.49 is: 105,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,488.86 : 180,066.09 = 76,763.49 : x
  2. Step 2: Convert to fraction form
    130,488.86/180,066.09 = 76,763.49/x
  3. Step 3: Cross multiply
    130,488.86x = 180,066.09 × 76,763.49
  4. Step 4: Simplify right side
    130,488.86x = 13,822,501,786.92
  5. Step 5: Solve for x
    x = 13,822,501,786.92/130,488.86
  6. Step 6: Final answer
    x = 105,928.60

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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.