Home / 130,808.23-180,533.69-76,378.21

Finding the Fourth Proportional to 130,808.23, 180,533.69 and 76,378.21

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Solution

The fourth proportional to 130,808.23, 180,533.69 and 76,378.21 is: 105,412.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,808.23 : 180,533.69 = 76,378.21 : x
  2. Step 2: Convert to fraction form
    130,808.23/180,533.69 = 76,378.21/x
  3. Step 3: Cross multiply
    130,808.23x = 180,533.69 × 76,378.21
  4. Step 4: Simplify right side
    130,808.23x = 13,788,840,086.89
  5. Step 5: Solve for x
    x = 13,788,840,086.89/130,808.23
  6. Step 6: Final answer
    x = 105,412.63

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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.