Home / 153,839.04-212,300.64-90,222.72

Finding the Fourth Proportional to 153,839.04, 212,300.64 and 90,222.72

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Solution

The fourth proportional to 153,839.04, 212,300.64 and 90,222.72 is: 124,508.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,839.04 : 212,300.64 = 90,222.72 : x
  2. Step 2: Convert to fraction form
    153,839.04/212,300.64 = 90,222.72/x
  3. Step 3: Cross multiply
    153,839.04x = 212,300.64 × 90,222.72
  4. Step 4: Simplify right side
    153,839.04x = 19,154,341,198.54
  5. Step 5: Solve for x
    x = 19,154,341,198.54/153,839.04
  6. Step 6: Final answer
    x = 124,508.98

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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.