Home / 128,524.60-177,366.14-70,386.43

Finding the Fourth Proportional to 128,524.60, 177,366.14 and 70,386.43

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Solution

The fourth proportional to 128,524.60, 177,366.14 and 70,386.43 is: 97,134.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,524.60 : 177,366.14 = 70,386.43 : x
  2. Step 2: Convert to fraction form
    128,524.60/177,366.14 = 70,386.43/x
  3. Step 3: Cross multiply
    128,524.60x = 177,366.14 × 70,386.43
  4. Step 4: Simplify right side
    128,524.60x = 12,484,169,045.55
  5. Step 5: Solve for x
    x = 12,484,169,045.55/128,524.60
  6. Step 6: Final answer
    x = 97,134.47

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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.