Home / 128,041.23-176,708.66-70,690.80

Finding the Fourth Proportional to 128,041.23, 176,708.66 and 70,690.80

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Solution

The fourth proportional to 128,041.23, 176,708.66 and 70,690.80 is: 97,559.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,041.23 : 176,708.66 = 70,690.80 : x
  2. Step 2: Convert to fraction form
    128,041.23/176,708.66 = 70,690.80/x
  3. Step 3: Cross multiply
    128,041.23x = 176,708.66 × 70,690.80
  4. Step 4: Simplify right side
    128,041.23x = 12,491,676,188.87
  5. Step 5: Solve for x
    x = 12,491,676,188.87/128,041.23
  6. Step 6: Final answer
    x = 97,559.80

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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.