Home / 128,303.43-177,055.07-70,941.76

Finding the Fourth Proportional to 128,303.43, 177,055.07 and 70,941.76

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Solution

The fourth proportional to 128,303.43, 177,055.07 and 70,941.76 is: 97,897.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,303.43 : 177,055.07 = 70,941.76 : x
  2. Step 2: Convert to fraction form
    128,303.43/177,055.07 = 70,941.76/x
  3. Step 3: Cross multiply
    128,303.43x = 177,055.07 × 70,941.76
  4. Step 4: Simplify right side
    128,303.43x = 12,560,597,485.38
  5. Step 5: Solve for x
    x = 12,560,597,485.38/128,303.43
  6. Step 6: Final answer
    x = 97,897.60

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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.