Home / 172,340.81-237,830.33-100,780.96

Finding the Fourth Proportional to 172,340.81, 237,830.33 and 100,780.96

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Solution

The fourth proportional to 172,340.81, 237,830.33 and 100,780.96 is: 139,077.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,340.81 : 237,830.33 = 100,780.96 : x
  2. Step 2: Convert to fraction form
    172,340.81/237,830.33 = 100,780.96/x
  3. Step 3: Cross multiply
    172,340.81x = 237,830.33 × 100,780.96
  4. Step 4: Simplify right side
    172,340.81x = 23,968,767,876.04
  5. Step 5: Solve for x
    x = 23,968,767,876.04/172,340.81
  6. Step 6: Final answer
    x = 139,077.72

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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.