Home / 117,085.12-161,595.66-76,915.24

Finding the Fourth Proportional to 117,085.12, 161,595.66 and 76,915.24

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Solution

The fourth proportional to 117,085.12, 161,595.66 and 76,915.24 is: 106,154.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,085.12 : 161,595.66 = 76,915.24 : x
  2. Step 2: Convert to fraction form
    117,085.12/161,595.66 = 76,915.24/x
  3. Step 3: Cross multiply
    117,085.12x = 161,595.66 × 76,915.24
  4. Step 4: Simplify right side
    117,085.12x = 12,429,168,971.86
  5. Step 5: Solve for x
    x = 12,429,168,971.86/117,085.12
  6. Step 6: Final answer
    x = 106,154.98

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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.