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Finding the Fourth Proportional to 210,762.07, 316,182.11 and 66,704.18

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Solution

The fourth proportional to 210,762.07, 316,182.11 and 66,704.18 is: 100,068.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,762.07 : 316,182.11 = 66,704.18 : x
  2. Step 2: Convert to fraction form
    210,762.07/316,182.11 = 66,704.18/x
  3. Step 3: Cross multiply
    210,762.07x = 316,182.11 × 66,704.18
  4. Step 4: Simplify right side
    210,762.07x = 21,090,666,463.79
  5. Step 5: Solve for x
    x = 21,090,666,463.79/210,762.07
  6. Step 6: Final answer
    x = 100,068.61

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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.