Home / 128,221.65-176,970.33-84,537.50

Finding the Fourth Proportional to 128,221.65, 176,970.33 and 84,537.50

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Solution

The fourth proportional to 128,221.65, 176,970.33 and 84,537.50 is: 116,677.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,221.65 : 176,970.33 = 84,537.50 : x
  2. Step 2: Convert to fraction form
    128,221.65/176,970.33 = 84,537.50/x
  3. Step 3: Cross multiply
    128,221.65x = 176,970.33 × 84,537.50
  4. Step 4: Simplify right side
    128,221.65x = 14,960,629,844.05
  5. Step 5: Solve for x
    x = 14,960,629,844.05/128,221.65
  6. Step 6: Final answer
    x = 116,677.87

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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.