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Finding the Fourth Proportional to 101,900.93, 152,802.20 and 42,720.71

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Solution

The fourth proportional to 101,900.93, 152,802.20 and 42,720.71 is: 64,060.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,900.93 : 152,802.20 = 42,720.71 : x
  2. Step 2: Convert to fraction form
    101,900.93/152,802.20 = 42,720.71/x
  3. Step 3: Cross multiply
    101,900.93x = 152,802.20 × 42,720.71
  4. Step 4: Simplify right side
    101,900.93x = 6,527,817,495.95
  5. Step 5: Solve for x
    x = 6,527,817,495.95/101,900.93
  6. Step 6: Final answer
    x = 64,060.43

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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.