Home / 170,919.40-256,206.30-77,492.20

Finding the Fourth Proportional to 170,919.40, 256,206.30 and 77,492.20

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Solution

The fourth proportional to 170,919.40, 256,206.30 and 77,492.20 is: 116,159.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,919.40 : 256,206.30 = 77,492.20 : x
  2. Step 2: Convert to fraction form
    170,919.40/256,206.30 = 77,492.20/x
  3. Step 3: Cross multiply
    170,919.40x = 256,206.30 × 77,492.20
  4. Step 4: Simplify right side
    170,919.40x = 19,853,989,840.86
  5. Step 5: Solve for x
    x = 19,853,989,840.86/170,919.40
  6. Step 6: Final answer
    x = 116,159.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.