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Finding the Fourth Proportional to 109,779.21, 151,495.31 and 59,478.21

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Solution

The fourth proportional to 109,779.21, 151,495.31 and 59,478.21 is: 82,079.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,779.21 : 151,495.31 = 59,478.21 : x
  2. Step 2: Convert to fraction form
    109,779.21/151,495.31 = 59,478.21/x
  3. Step 3: Cross multiply
    109,779.21x = 151,495.31 × 59,478.21
  4. Step 4: Simplify right side
    109,779.21x = 9,010,669,253.41
  5. Step 5: Solve for x
    x = 9,010,669,253.41/109,779.21
  6. Step 6: Final answer
    x = 82,079.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.