Home / 129,225.51-178,305.06-75,500.15

Finding the Fourth Proportional to 129,225.51, 178,305.06 and 75,500.15

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Solution

The fourth proportional to 129,225.51, 178,305.06 and 75,500.15 is: 104,174.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,225.51 : 178,305.06 = 75,500.15 : x
  2. Step 2: Convert to fraction form
    129,225.51/178,305.06 = 75,500.15/x
  3. Step 3: Cross multiply
    129,225.51x = 178,305.06 × 75,500.15
  4. Step 4: Simplify right side
    129,225.51x = 13,462,058,775.76
  5. Step 5: Solve for x
    x = 13,462,058,775.76/129,225.51
  6. Step 6: Final answer
    x = 104,174.93

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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.