Home / 153,774.44-212,216.10-86,705

Finding the Fourth Proportional to 153,774.44, 212,216.10 and 86,705

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Solution

The fourth proportional to 153,774.44, 212,216.10 and 86,705 is: 119,657.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,774.44 : 212,216.10 = 86,705 : x
  2. Step 2: Convert to fraction form
    153,774.44/212,216.10 = 86,705/x
  3. Step 3: Cross multiply
    153,774.44x = 212,216.10 × 86,705
  4. Step 4: Simplify right side
    153,774.44x = 18,400,196,950.50
  5. Step 5: Solve for x
    x = 18,400,196,950.50/153,774.44
  6. Step 6: Final answer
    x = 119,657.06

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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.