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Finding the Fourth Proportional to 152,611.92, 210,603.78 and 85,543.92

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Solution

The fourth proportional to 152,611.92, 210,603.78 and 85,543.92 is: 118,050.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,611.92 : 210,603.78 = 85,543.92 : x
  2. Step 2: Convert to fraction form
    152,611.92/210,603.78 = 85,543.92/x
  3. Step 3: Cross multiply
    152,611.92x = 210,603.78 × 85,543.92
  4. Step 4: Simplify right side
    152,611.92x = 18,015,872,908.02
  5. Step 5: Solve for x
    x = 18,015,872,908.02/152,611.92
  6. Step 6: Final answer
    x = 118,050.23

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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.