Home / 99,143.94-136,821.12-53,821.92

Finding the Fourth Proportional to 99,143.94, 136,821.12 and 53,821.92

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Solution

The fourth proportional to 99,143.94, 136,821.12 and 53,821.92 is: 74,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,143.94 : 136,821.12 = 53,821.92 : x
  2. Step 2: Convert to fraction form
    99,143.94/136,821.12 = 53,821.92/x
  3. Step 3: Cross multiply
    99,143.94x = 136,821.12 × 53,821.92
  4. Step 4: Simplify right side
    99,143.94x = 7,363,975,374.95
  5. Step 5: Solve for x
    x = 7,363,975,374.95/99,143.94
  6. Step 6: Final answer
    x = 74,275.60

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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.