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Finding the Fourth Proportional to 101,810.93, 152,760.13 and 72,417.65

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Solution

The fourth proportional to 101,810.93, 152,760.13 and 72,417.65 is: 108,657.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,810.93 : 152,760.13 = 72,417.65 : x
  2. Step 2: Convert to fraction form
    101,810.93/152,760.13 = 72,417.65/x
  3. Step 3: Cross multiply
    101,810.93x = 152,760.13 × 72,417.65
  4. Step 4: Simplify right side
    101,810.93x = 11,062,528,683.45
  5. Step 5: Solve for x
    x = 11,062,528,683.45/101,810.93
  6. Step 6: Final answer
    x = 108,657.58

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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.