Home / 130,632.90-180,257.28-79,627.20

Finding the Fourth Proportional to 130,632.90, 180,257.28 and 79,627.20

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Solution

The fourth proportional to 130,632.90, 180,257.28 and 79,627.20 is: 109,875.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,632.90 : 180,257.28 = 79,627.20 : x
  2. Step 2: Convert to fraction form
    130,632.90/180,257.28 = 79,627.20/x
  3. Step 3: Cross multiply
    130,632.90x = 180,257.28 × 79,627.20
  4. Step 4: Simplify right side
    130,632.90x = 14,353,382,486.02
  5. Step 5: Solve for x
    x = 14,353,382,486.02/130,632.90
  6. Step 6: Final answer
    x = 109,875.71

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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.