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Finding the Fourth Proportional to 210,752.16, 316,134 and 70,505.76

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Solution

The fourth proportional to 210,752.16, 316,134 and 70,505.76 is: 105,760.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,752.16 : 316,134 = 70,505.76 : x
  2. Step 2: Convert to fraction form
    210,752.16/316,134 = 70,505.76/x
  3. Step 3: Cross multiply
    210,752.16x = 316,134 × 70,505.76
  4. Step 4: Simplify right side
    210,752.16x = 22,289,267,931.84
  5. Step 5: Solve for x
    x = 22,289,267,931.84/210,752.16
  6. Step 6: Final answer
    x = 105,760.57

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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.