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Finding the Fourth Proportional to 113,998.80, 170,803.80 and 97,280.40

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Solution

The fourth proportional to 113,998.80, 170,803.80 and 97,280.40 is: 145,754.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,998.80 : 170,803.80 = 97,280.40 : x
  2. Step 2: Convert to fraction form
    113,998.80/170,803.80 = 97,280.40/x
  3. Step 3: Cross multiply
    113,998.80x = 170,803.80 × 97,280.40
  4. Step 4: Simplify right side
    113,998.80x = 16,615,861,985.52
  5. Step 5: Solve for x
    x = 16,615,861,985.52/113,998.80
  6. Step 6: Final answer
    x = 145,754.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.