Home / 118,749.10-163,984.77-76,381.18

Finding the Fourth Proportional to 118,749.10, 163,984.77 and 76,381.18

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Solution

The fourth proportional to 118,749.10, 163,984.77 and 76,381.18 is: 105,477.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,749.10 : 163,984.77 = 76,381.18 : x
  2. Step 2: Convert to fraction form
    118,749.10/163,984.77 = 76,381.18/x
  3. Step 3: Cross multiply
    118,749.10x = 163,984.77 × 76,381.18
  4. Step 4: Simplify right side
    118,749.10x = 12,525,350,234.63
  5. Step 5: Solve for x
    x = 12,525,350,234.63/118,749.10
  6. Step 6: Final answer
    x = 105,477.43

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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.