Home / 210,021.70-314,950.65-91,612.30

Finding the Fourth Proportional to 210,021.70, 314,950.65 and 91,612.30

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Solution

The fourth proportional to 210,021.70, 314,950.65 and 91,612.30 is: 137,382.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,021.70 : 314,950.65 = 91,612.30 : x
  2. Step 2: Convert to fraction form
    210,021.70/314,950.65 = 91,612.30/x
  3. Step 3: Cross multiply
    210,021.70x = 314,950.65 × 91,612.30
  4. Step 4: Simplify right side
    210,021.70x = 28,853,353,433.00
  5. Step 5: Solve for x
    x = 28,853,353,433.00/210,021.70
  6. Step 6: Final answer
    x = 137,382.72

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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.