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Finding the Fourth Proportional to 153,338.80, 211,598.04 and 89,672.80

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Solution

The fourth proportional to 153,338.80, 211,598.04 and 89,672.80 is: 123,742.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,338.80 : 211,598.04 = 89,672.80 : x
  2. Step 2: Convert to fraction form
    153,338.80/211,598.04 = 89,672.80/x
  3. Step 3: Cross multiply
    153,338.80x = 211,598.04 × 89,672.80
  4. Step 4: Simplify right side
    153,338.80x = 18,974,588,721.31
  5. Step 5: Solve for x
    x = 18,974,588,721.31/153,338.80
  6. Step 6: Final answer
    x = 123,742.91

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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.