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Finding the Fourth Proportional to 102,353.65, 153,530.47 and 39,980.41

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Solution

The fourth proportional to 102,353.65, 153,530.47 and 39,980.41 is: 59,970.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,353.65 : 153,530.47 = 39,980.41 : x
  2. Step 2: Convert to fraction form
    102,353.65/153,530.47 = 39,980.41/x
  3. Step 3: Cross multiply
    102,353.65x = 153,530.47 × 39,980.41
  4. Step 4: Simplify right side
    102,353.65x = 6,138,210,537.37
  5. Step 5: Solve for x
    x = 6,138,210,537.37/102,353.65
  6. Step 6: Final answer
    x = 59,970.61

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1.5x scale

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.