Home / 126,484.20-174,543.48-72,777.51

Finding the Fourth Proportional to 126,484.20, 174,543.48 and 72,777.51

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Solution

The fourth proportional to 126,484.20, 174,543.48 and 72,777.51 is: 100,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,484.20 : 174,543.48 = 72,777.51 : x
  2. Step 2: Convert to fraction form
    126,484.20/174,543.48 = 72,777.51/x
  3. Step 3: Cross multiply
    126,484.20x = 174,543.48 × 72,777.51
  4. Step 4: Simplify right side
    126,484.20x = 12,702,839,861.13
  5. Step 5: Solve for x
    x = 12,702,839,861.13/126,484.20
  6. Step 6: Final answer
    x = 100,430.25

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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.