Home / 113,518.25-156,491.54-79,421.10

Finding the Fourth Proportional to 113,518.25, 156,491.54 and 79,421.10

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Solution

The fourth proportional to 113,518.25, 156,491.54 and 79,421.10 is: 109,486.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,518.25 : 156,491.54 = 79,421.10 : x
  2. Step 2: Convert to fraction form
    113,518.25/156,491.54 = 79,421.10/x
  3. Step 3: Cross multiply
    113,518.25x = 156,491.54 × 79,421.10
  4. Step 4: Simplify right side
    113,518.25x = 12,428,730,247.49
  5. Step 5: Solve for x
    x = 12,428,730,247.49/113,518.25
  6. Step 6: Final answer
    x = 109,486.63

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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.