Home / 130,642.74-180,325.35-85,327.65

Finding the Fourth Proportional to 130,642.74, 180,325.35 and 85,327.65

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Solution

The fourth proportional to 130,642.74, 180,325.35 and 85,327.65 is: 117,777.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,642.74 : 180,325.35 = 85,327.65 : x
  2. Step 2: Convert to fraction form
    130,642.74/180,325.35 = 85,327.65/x
  3. Step 3: Cross multiply
    130,642.74x = 180,325.35 × 85,327.65
  4. Step 4: Simplify right side
    130,642.74x = 15,386,738,350.93
  5. Step 5: Solve for x
    x = 15,386,738,350.93/130,642.74
  6. Step 6: Final answer
    x = 117,777.22

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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.