Home / 127,792.10-176,383.15-79,430.55

Finding the Fourth Proportional to 127,792.10, 176,383.15 and 79,430.55

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Solution

The fourth proportional to 127,792.10, 176,383.15 and 79,430.55 is: 109,632.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,792.10 : 176,383.15 = 79,430.55 : x
  2. Step 2: Convert to fraction form
    127,792.10/176,383.15 = 79,430.55/x
  3. Step 3: Cross multiply
    127,792.10x = 176,383.15 × 79,430.55
  4. Step 4: Simplify right side
    127,792.10x = 14,010,210,615.23
  5. Step 5: Solve for x
    x = 14,010,210,615.23/127,792.10
  6. Step 6: Final answer
    x = 109,632.84

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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.