Home / 128,848.07-177,802.24-77,830.62

Finding the Fourth Proportional to 128,848.07, 177,802.24 and 77,830.62

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Solution

The fourth proportional to 128,848.07, 177,802.24 and 77,830.62 is: 107,401.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,848.07 : 177,802.24 = 77,830.62 : x
  2. Step 2: Convert to fraction form
    128,848.07/177,802.24 = 77,830.62/x
  3. Step 3: Cross multiply
    128,848.07x = 177,802.24 × 77,830.62
  4. Step 4: Simplify right side
    128,848.07x = 13,838,458,861.32
  5. Step 5: Solve for x
    x = 13,838,458,861.32/128,848.07
  6. Step 6: Final answer
    x = 107,401.37

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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.