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Finding the Fourth Proportional to 153,955.40, 230,933.10 and 71,011.40

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Solution

The fourth proportional to 153,955.40, 230,933.10 and 71,011.40 is: 106,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,955.40 : 230,933.10 = 71,011.40 : x
  2. Step 2: Convert to fraction form
    153,955.40/230,933.10 = 71,011.40/x
  3. Step 3: Cross multiply
    153,955.40x = 230,933.10 × 71,011.40
  4. Step 4: Simplify right side
    153,955.40x = 16,398,882,737.34
  5. Step 5: Solve for x
    x = 16,398,882,737.34/153,955.40
  6. Step 6: Final answer
    x = 106,517.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.