Home / 129,223.76-178,302.63-75,498.39

Finding the Fourth Proportional to 129,223.76, 178,302.63 and 75,498.39

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Solution

The fourth proportional to 129,223.76, 178,302.63 and 75,498.39 is: 104,172.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,223.76 : 178,302.63 = 75,498.39 : x
  2. Step 2: Convert to fraction form
    129,223.76/178,302.63 = 75,498.39/x
  3. Step 3: Cross multiply
    129,223.76x = 178,302.63 × 75,498.39
  4. Step 4: Simplify right side
    129,223.76x = 13,461,561,780.88
  5. Step 5: Solve for x
    x = 13,461,561,780.88/129,223.76
  6. Step 6: Final answer
    x = 104,172.50

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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.