Home / 128,089.89-176,763.87-71,501.27

Finding the Fourth Proportional to 128,089.89, 176,763.87 and 71,501.27

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Solution

The fourth proportional to 128,089.89, 176,763.87 and 71,501.27 is: 98,671.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,089.89 : 176,763.87 = 71,501.27 : x
  2. Step 2: Convert to fraction form
    128,089.89/176,763.87 = 71,501.27/x
  3. Step 3: Cross multiply
    128,089.89x = 176,763.87 × 71,501.27
  4. Step 4: Simplify right side
    128,089.89x = 12,638,840,311.30
  5. Step 5: Solve for x
    x = 12,638,840,311.30/128,089.89
  6. Step 6: Final answer
    x = 98,671.65

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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.