Home / 128,566.74-177,417.18-70,422.54

Finding the Fourth Proportional to 128,566.74, 177,417.18 and 70,422.54

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Solution

The fourth proportional to 128,566.74, 177,417.18 and 70,422.54 is: 97,180.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,566.74 : 177,417.18 = 70,422.54 : x
  2. Step 2: Convert to fraction form
    128,566.74/177,417.18 = 70,422.54/x
  3. Step 3: Cross multiply
    128,566.74x = 177,417.18 × 70,422.54
  4. Step 4: Simplify right side
    128,566.74x = 12,494,168,455.24
  5. Step 5: Solve for x
    x = 12,494,168,455.24/128,566.74
  6. Step 6: Final answer
    x = 97,180.41

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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.