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Finding the Fourth Proportional to 153,937.98, 212,378.22 and 90,263.43

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Solution

The fourth proportional to 153,937.98, 212,378.22 and 90,263.43 is: 124,530.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,937.98 : 212,378.22 = 90,263.43 : x
  2. Step 2: Convert to fraction form
    153,937.98/212,378.22 = 90,263.43/x
  3. Step 3: Cross multiply
    153,937.98x = 212,378.22 × 90,263.43
  4. Step 4: Simplify right side
    153,937.98x = 19,169,986,594.49
  5. Step 5: Solve for x
    x = 19,169,986,594.49/153,937.98
  6. Step 6: Final answer
    x = 124,530.58

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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.