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Finding the Fourth Proportional to 157,040.68, 216,786.90 and 103,353.88

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Solution

The fourth proportional to 157,040.68, 216,786.90 and 103,353.88 is: 142,674.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,040.68 : 216,786.90 = 103,353.88 : x
  2. Step 2: Convert to fraction form
    157,040.68/216,786.90 = 103,353.88/x
  3. Step 3: Cross multiply
    157,040.68x = 216,786.90 × 103,353.88
  4. Step 4: Simplify right side
    157,040.68x = 22,405,767,248.17
  5. Step 5: Solve for x
    x = 22,405,767,248.17/157,040.68
  6. Step 6: Final answer
    x = 142,674.93

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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.