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Finding the Fourth Proportional to 153,347.60, 211,625.76 and 85,367.60

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Solution

The fourth proportional to 153,347.60, 211,625.76 and 85,367.60 is: 117,810.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,347.60 : 211,625.76 = 85,367.60 : x
  2. Step 2: Convert to fraction form
    153,347.60/211,625.76 = 85,367.60/x
  3. Step 3: Cross multiply
    153,347.60x = 211,625.76 × 85,367.60
  4. Step 4: Simplify right side
    153,347.60x = 18,065,983,229.38
  5. Step 5: Solve for x
    x = 18,065,983,229.38/153,347.60
  6. Step 6: Final answer
    x = 117,810.67

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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.