Home / 128,051.89-176,701.91-74,328.23

Finding the Fourth Proportional to 128,051.89, 176,701.91 and 74,328.23

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Solution

The fourth proportional to 128,051.89, 176,701.91 and 74,328.23 is: 102,567.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,051.89 : 176,701.91 = 74,328.23 : x
  2. Step 2: Convert to fraction form
    128,051.89/176,701.91 = 74,328.23/x
  3. Step 3: Cross multiply
    128,051.89x = 176,701.91 × 74,328.23
  4. Step 4: Simplify right side
    128,051.89x = 13,133,940,278.03
  5. Step 5: Solve for x
    x = 13,133,940,278.03/128,051.89
  6. Step 6: Final answer
    x = 102,567.33

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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.