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Finding the Fourth Proportional to 136,952.80, 205,429.20 and 43,458.40

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Solution

The fourth proportional to 136,952.80, 205,429.20 and 43,458.40 is: 65,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,952.80 : 205,429.20 = 43,458.40 : x
  2. Step 2: Convert to fraction form
    136,952.80/205,429.20 = 43,458.40/x
  3. Step 3: Cross multiply
    136,952.80x = 205,429.20 × 43,458.40
  4. Step 4: Simplify right side
    136,952.80x = 8,927,624,345.28
  5. Step 5: Solve for x
    x = 8,927,624,345.28/136,952.80
  6. Step 6: Final answer
    x = 65,187.60

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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.