Home / 154,003.04-212,527.68-90,386.72

Finding the Fourth Proportional to 154,003.04, 212,527.68 and 90,386.72

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Solution

The fourth proportional to 154,003.04, 212,527.68 and 90,386.72 is: 124,735.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,003.04 : 212,527.68 = 90,386.72 : x
  2. Step 2: Convert to fraction form
    154,003.04/212,527.68 = 90,386.72/x
  3. Step 3: Cross multiply
    154,003.04x = 212,527.68 × 90,386.72
  4. Step 4: Simplify right side
    154,003.04x = 19,209,679,904.41
  5. Step 5: Solve for x
    x = 19,209,679,904.41/154,003.04
  6. Step 6: Final answer
    x = 124,735.72

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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.