Home / 210,237.05-315,780.06-126,156.92

Finding the Fourth Proportional to 210,237.05, 315,780.06 and 126,156.92

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Solution

The fourth proportional to 210,237.05, 315,780.06 and 126,156.92 is: 189,490.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,237.05 : 315,780.06 = 126,156.92 : x
  2. Step 2: Convert to fraction form
    210,237.05/315,780.06 = 126,156.92/x
  3. Step 3: Cross multiply
    210,237.05x = 315,780.06 × 126,156.92
  4. Step 4: Simplify right side
    210,237.05x = 39,837,839,767.02
  5. Step 5: Solve for x
    x = 39,837,839,767.02/210,237.05
  6. Step 6: Final answer
    x = 189,490.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.