Home / 128,048.20-176,723.23-71,471.32

Finding the Fourth Proportional to 128,048.20, 176,723.23 and 71,471.32

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Solution

The fourth proportional to 128,048.20, 176,723.23 and 71,471.32 is: 98,639.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,048.20 : 176,723.23 = 71,471.32 : x
  2. Step 2: Convert to fraction form
    128,048.20/176,723.23 = 71,471.32/x
  3. Step 3: Cross multiply
    128,048.20x = 176,723.23 × 71,471.32
  4. Step 4: Simplify right side
    128,048.20x = 12,630,642,522.76
  5. Step 5: Solve for x
    x = 12,630,642,522.76/128,048.20
  6. Step 6: Final answer
    x = 98,639.75

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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.