Home / 99,612.13-137,461.21-54,289.21

Finding the Fourth Proportional to 99,612.13, 137,461.21 and 54,289.21

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Solution

The fourth proportional to 99,612.13, 137,461.21 and 54,289.21 is: 74,917.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,612.13 : 137,461.21 = 54,289.21 : x
  2. Step 2: Convert to fraction form
    99,612.13/137,461.21 = 54,289.21/x
  3. Step 3: Cross multiply
    99,612.13x = 137,461.21 × 54,289.21
  4. Step 4: Simplify right side
    99,612.13x = 7,462,659,809.24
  5. Step 5: Solve for x
    x = 7,462,659,809.24/99,612.13
  6. Step 6: Final answer
    x = 74,917.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.