Home / 129,718.50-179,011.77-70,102.50

Finding the Fourth Proportional to 129,718.50, 179,011.77 and 70,102.50

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Solution

The fourth proportional to 129,718.50, 179,011.77 and 70,102.50 is: 96,741.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,718.50 : 179,011.77 = 70,102.50 : x
  2. Step 2: Convert to fraction form
    129,718.50/179,011.77 = 70,102.50/x
  3. Step 3: Cross multiply
    129,718.50x = 179,011.77 × 70,102.50
  4. Step 4: Simplify right side
    129,718.50x = 12,549,172,606.43
  5. Step 5: Solve for x
    x = 12,549,172,606.43/129,718.50
  6. Step 6: Final answer
    x = 96,741.58

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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.