Home / 128,675.43-177,569.94-70,531.60

Finding the Fourth Proportional to 128,675.43, 177,569.94 and 70,531.60

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Solution

The fourth proportional to 128,675.43, 177,569.94 and 70,531.60 is: 97,332.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,675.43 : 177,569.94 = 70,531.60 : x
  2. Step 2: Convert to fraction form
    128,675.43/177,569.94 = 70,531.60/x
  3. Step 3: Cross multiply
    128,675.43x = 177,569.94 × 70,531.60
  4. Step 4: Simplify right side
    128,675.43x = 12,524,291,980.10
  5. Step 5: Solve for x
    x = 12,524,291,980.10/128,675.43
  6. Step 6: Final answer
    x = 97,332.43

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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.