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Finding the Fourth Proportional to 152,805.18, 210,874.60 and 85,737.18

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Solution

The fourth proportional to 152,805.18, 210,874.60 and 85,737.18 is: 118,319.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,805.18 : 210,874.60 = 85,737.18 : x
  2. Step 2: Convert to fraction form
    152,805.18/210,874.60 = 85,737.18/x
  3. Step 3: Cross multiply
    152,805.18x = 210,874.60 × 85,737.18
  4. Step 4: Simplify right side
    152,805.18x = 18,079,793,537.63
  5. Step 5: Solve for x
    x = 18,079,793,537.63/152,805.18
  6. Step 6: Final answer
    x = 118,319.25

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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.