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Finding the Fourth Proportional to 134,860.80, 202,347.90 and 72,458.40

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Solution

The fourth proportional to 134,860.80, 202,347.90 and 72,458.40 is: 108,718.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,860.80 : 202,347.90 = 72,458.40 : x
  2. Step 2: Convert to fraction form
    134,860.80/202,347.90 = 72,458.40/x
  3. Step 3: Cross multiply
    134,860.80x = 202,347.90 × 72,458.40
  4. Step 4: Simplify right side
    134,860.80x = 14,661,805,077.36
  5. Step 5: Solve for x
    x = 14,661,805,077.36/134,860.80
  6. Step 6: Final answer
    x = 108,718.06

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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.