Home / 128,053.18-176,723.40-71,473.06

Finding the Fourth Proportional to 128,053.18, 176,723.40 and 71,473.06

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Solution

The fourth proportional to 128,053.18, 176,723.40 and 71,473.06 is: 98,638.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,053.18 : 176,723.40 = 71,473.06 : x
  2. Step 2: Convert to fraction form
    128,053.18/176,723.40 = 71,473.06/x
  3. Step 3: Cross multiply
    128,053.18x = 176,723.40 × 71,473.06
  4. Step 4: Simplify right side
    128,053.18x = 12,630,962,171.60
  5. Step 5: Solve for x
    x = 12,630,962,171.60/128,053.18
  6. Step 6: Final answer
    x = 98,638.41

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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.