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Finding the Fourth Proportional to 129,030.40, 193,574.40 and 101,036.80

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Solution

The fourth proportional to 129,030.40, 193,574.40 and 101,036.80 is: 151,577.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,030.40 : 193,574.40 = 101,036.80 : x
  2. Step 2: Convert to fraction form
    129,030.40/193,574.40 = 101,036.80/x
  3. Step 3: Cross multiply
    129,030.40x = 193,574.40 × 101,036.80
  4. Step 4: Simplify right side
    129,030.40x = 19,558,137,937.92
  5. Step 5: Solve for x
    x = 19,558,137,937.92/129,030.40
  6. Step 6: Final answer
    x = 151,577.75

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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.