Home / 129,017.96-178,038.73-71,661.00

Finding the Fourth Proportional to 129,017.96, 178,038.73 and 71,661.00

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Solution

The fourth proportional to 129,017.96, 178,038.73 and 71,661.00 is: 98,888.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,017.96 : 178,038.73 = 71,661.00 : x
  2. Step 2: Convert to fraction form
    129,017.96/178,038.73 = 71,661.00/x
  3. Step 3: Cross multiply
    129,017.96x = 178,038.73 × 71,661.00
  4. Step 4: Simplify right side
    129,017.96x = 12,758,434,389.30
  5. Step 5: Solve for x
    x = 12,758,434,389.30/129,017.96
  6. Step 6: Final answer
    x = 98,888.82

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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.