Home / 154,302.04-212,934.90-90,645.64

Finding the Fourth Proportional to 154,302.04, 212,934.90 and 90,645.64

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Solution

The fourth proportional to 154,302.04, 212,934.90 and 90,645.64 is: 125,089.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,302.04 : 212,934.90 = 90,645.64 : x
  2. Step 2: Convert to fraction form
    154,302.04/212,934.90 = 90,645.64/x
  3. Step 3: Cross multiply
    154,302.04x = 212,934.90 × 90,645.64
  4. Step 4: Simplify right side
    154,302.04x = 19,301,620,288.84
  5. Step 5: Solve for x
    x = 19,301,620,288.84/154,302.04
  6. Step 6: Final answer
    x = 125,089.86

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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.