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Finding the Fourth Proportional to 113,400.48, 156,482.49 and 65,657.05

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Solution

The fourth proportional to 113,400.48, 156,482.49 and 65,657.05 is: 90,600.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,400.48 : 156,482.49 = 65,657.05 : x
  2. Step 2: Convert to fraction form
    113,400.48/156,482.49 = 65,657.05/x
  3. Step 3: Cross multiply
    113,400.48x = 156,482.49 × 65,657.05
  4. Step 4: Simplify right side
    113,400.48x = 10,274,178,670.05
  5. Step 5: Solve for x
    x = 10,274,178,670.05/113,400.48
  6. Step 6: Final answer
    x = 90,600.84

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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.