Home / 130,649.04-180,253.08-76,188.78

Finding the Fourth Proportional to 130,649.04, 180,253.08 and 76,188.78

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Solution

The fourth proportional to 130,649.04, 180,253.08 and 76,188.78 is: 105,115.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,649.04 : 180,253.08 = 76,188.78 : x
  2. Step 2: Convert to fraction form
    130,649.04/180,253.08 = 76,188.78/x
  3. Step 3: Cross multiply
    130,649.04x = 180,253.08 × 76,188.78
  4. Step 4: Simplify right side
    130,649.04x = 13,733,262,256.44
  5. Step 5: Solve for x
    x = 13,733,262,256.44/130,649.04
  6. Step 6: Final answer
    x = 105,115.68

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1.5x scale

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.