Home / 128,182.15-176,890.74-70,821.44

Finding the Fourth Proportional to 128,182.15, 176,890.74 and 70,821.44

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Solution

The fourth proportional to 128,182.15, 176,890.74 and 70,821.44 is: 97,733.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,182.15 : 176,890.74 = 70,821.44 : x
  2. Step 2: Convert to fraction form
    128,182.15/176,890.74 = 70,821.44/x
  3. Step 3: Cross multiply
    128,182.15x = 176,890.74 × 70,821.44
  4. Step 4: Simplify right side
    128,182.15x = 12,527,656,442.77
  5. Step 5: Solve for x
    x = 12,527,656,442.77/128,182.15
  6. Step 6: Final answer
    x = 97,733.24

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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.