Home / 128,242.10-176,973.66-71,653.48

Finding the Fourth Proportional to 128,242.10, 176,973.66 and 71,653.48

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Solution

The fourth proportional to 128,242.10, 176,973.66 and 71,653.48 is: 98,881.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,242.10 : 176,973.66 = 71,653.48 : x
  2. Step 2: Convert to fraction form
    128,242.10/176,973.66 = 71,653.48/x
  3. Step 3: Cross multiply
    128,242.10x = 176,973.66 × 71,653.48
  4. Step 4: Simplify right side
    128,242.10x = 12,680,778,164.90
  5. Step 5: Solve for x
    x = 12,680,778,164.90/128,242.10
  6. Step 6: Final answer
    x = 98,881.55

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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.