Home / 130,646.81-180,249.90-76,186.63

Finding the Fourth Proportional to 130,646.81, 180,249.90 and 76,186.63

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Solution

The fourth proportional to 130,646.81, 180,249.90 and 76,186.63 is: 105,112.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,646.81 : 180,249.90 = 76,186.63 : x
  2. Step 2: Convert to fraction form
    130,646.81/180,249.90 = 76,186.63/x
  3. Step 3: Cross multiply
    130,646.81x = 180,249.90 × 76,186.63
  4. Step 4: Simplify right side
    130,646.81x = 13,732,632,438.84
  5. Step 5: Solve for x
    x = 13,732,632,438.84/130,646.81
  6. Step 6: Final answer
    x = 105,112.65

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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.