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Finding the Fourth Proportional to 101,900.99, 152,802.35 and 42,720.77

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Solution

The fourth proportional to 101,900.99, 152,802.35 and 42,720.77 is: 64,060.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,900.99 : 152,802.35 = 42,720.77 : x
  2. Step 2: Convert to fraction form
    101,900.99/152,802.35 = 42,720.77/x
  3. Step 3: Cross multiply
    101,900.99x = 152,802.35 × 42,720.77
  4. Step 4: Simplify right side
    101,900.99x = 6,527,833,518.90
  5. Step 5: Solve for x
    x = 6,527,833,518.90/101,900.99
  6. Step 6: Final answer
    x = 64,060.55

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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.