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Finding the Fourth Proportional to 103,689.80, 155,534.70 and 37,132.10

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Solution

The fourth proportional to 103,689.80, 155,534.70 and 37,132.10 is: 55,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.80 : 155,534.70 = 37,132.10 : x
  2. Step 2: Convert to fraction form
    103,689.80/155,534.70 = 37,132.10/x
  3. Step 3: Cross multiply
    103,689.80x = 155,534.70 × 37,132.10
  4. Step 4: Simplify right side
    103,689.80x = 5,775,330,033.87
  5. Step 5: Solve for x
    x = 5,775,330,033.87/103,689.80
  6. Step 6: Final answer
    x = 55,698.15

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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.