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Finding the Fourth Proportional to 113,762.25, 170,510.51 and 85,591.80

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Solution

The fourth proportional to 113,762.25, 170,510.51 and 85,591.80 is: 128,287.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,762.25 : 170,510.51 = 85,591.80 : x
  2. Step 2: Convert to fraction form
    113,762.25/170,510.51 = 85,591.80/x
  3. Step 3: Cross multiply
    113,762.25x = 170,510.51 × 85,591.80
  4. Step 4: Simplify right side
    113,762.25x = 14,594,301,041.86
  5. Step 5: Solve for x
    x = 14,594,301,041.86/113,762.25
  6. Step 6: Final answer
    x = 128,287.73

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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.