Home / 99,143.50-136,816.94-53,823.10

Finding the Fourth Proportional to 99,143.50, 136,816.94 and 53,823.10

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Solution

The fourth proportional to 99,143.50, 136,816.94 and 53,823.10 is: 74,275.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,143.50 : 136,816.94 = 53,823.10 : x
  2. Step 2: Convert to fraction form
    99,143.50/136,816.94 = 53,823.10/x
  3. Step 3: Cross multiply
    99,143.50x = 136,816.94 × 53,823.10
  4. Step 4: Simplify right side
    99,143.50x = 7,363,911,843.31
  5. Step 5: Solve for x
    x = 7,363,911,843.31/99,143.50
  6. Step 6: Final answer
    x = 74,275.29

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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.