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Finding the Fourth Proportional to 152,806.96, 210,862.02 and 85,726

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Solution

The fourth proportional to 152,806.96, 210,862.02 and 85,726 is: 118,295.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,806.96 : 210,862.02 = 85,726 : x
  2. Step 2: Convert to fraction form
    152,806.96/210,862.02 = 85,726/x
  3. Step 3: Cross multiply
    152,806.96x = 210,862.02 × 85,726
  4. Step 4: Simplify right side
    152,806.96x = 18,076,357,526.52
  5. Step 5: Solve for x
    x = 18,076,357,526.52/152,806.96
  6. Step 6: Final answer
    x = 118,295.38

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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.