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Finding the Fourth Proportional to 134,779.40, 202,314.90 and 84,915.80

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Solution

The fourth proportional to 134,779.40, 202,314.90 and 84,915.80 is: 127,465.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,779.40 : 202,314.90 = 84,915.80 : x
  2. Step 2: Convert to fraction form
    134,779.40/202,314.90 = 84,915.80/x
  3. Step 3: Cross multiply
    134,779.40x = 202,314.90 × 84,915.80
  4. Step 4: Simplify right side
    134,779.40x = 17,179,731,585.42
  5. Step 5: Solve for x
    x = 17,179,731,585.42/134,779.40
  6. Step 6: Final answer
    x = 127,465.56

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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.