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Finding the Fourth Proportional to 152,887.95, 210,986.71 and 89,213.45

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Solution

The fourth proportional to 152,887.95, 210,986.71 and 89,213.45 is: 123,115.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,887.95 : 210,986.71 = 89,213.45 : x
  2. Step 2: Convert to fraction form
    152,887.95/210,986.71 = 89,213.45/x
  3. Step 3: Cross multiply
    152,887.95x = 210,986.71 × 89,213.45
  4. Step 4: Simplify right side
    152,887.95x = 18,822,851,025.28
  5. Step 5: Solve for x
    x = 18,822,851,025.28/152,887.95
  6. Step 6: Final answer
    x = 123,115.33

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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.