Home / 102,612.80-153,641.16-53,261.12

Finding the Fourth Proportional to 102,612.80, 153,641.16 and 53,261.12

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Solution

The fourth proportional to 102,612.80, 153,641.16 and 53,261.12 is: 79,747.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,612.80 : 153,641.16 = 53,261.12 : x
  2. Step 2: Convert to fraction form
    102,612.80/153,641.16 = 53,261.12/x
  3. Step 3: Cross multiply
    102,612.80x = 153,641.16 × 53,261.12
  4. Step 4: Simplify right side
    102,612.80x = 8,183,100,259.70
  5. Step 5: Solve for x
    x = 8,183,100,259.70/102,612.80
  6. Step 6: Final answer
    x = 79,747.36

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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.