Home / 128,524.35-177,365.79-70,386.18

Finding the Fourth Proportional to 128,524.35, 177,365.79 and 70,386.18

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Solution

The fourth proportional to 128,524.35, 177,365.79 and 70,386.18 is: 97,134.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,524.35 : 177,365.79 = 70,386.18 : x
  2. Step 2: Convert to fraction form
    128,524.35/177,365.79 = 70,386.18/x
  3. Step 3: Cross multiply
    128,524.35x = 177,365.79 × 70,386.18
  4. Step 4: Simplify right side
    128,524.35x = 12,484,100,420.78
  5. Step 5: Solve for x
    x = 12,484,100,420.78/128,524.35
  6. Step 6: Final answer
    x = 97,134.13

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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.