Home / 154,195.04-212,711.20-103,209.92

Finding the Fourth Proportional to 154,195.04, 212,711.20 and 103,209.92

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Solution

The fourth proportional to 154,195.04, 212,711.20 and 103,209.92 is: 142,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,195.04 : 212,711.20 = 103,209.92 : x
  2. Step 2: Convert to fraction form
    154,195.04/212,711.20 = 103,209.92/x
  3. Step 3: Cross multiply
    154,195.04x = 212,711.20 × 103,209.92
  4. Step 4: Simplify right side
    154,195.04x = 21,953,905,935.10
  5. Step 5: Solve for x
    x = 21,953,905,935.10/154,195.04
  6. Step 6: Final answer
    x = 142,377.51

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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.