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Finding the Fourth Proportional to 118,534.48, 177,810.90 and 39,649.12

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Solution

The fourth proportional to 118,534.48, 177,810.90 and 39,649.12 is: 59,476.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,534.48 : 177,810.90 = 39,649.12 : x
  2. Step 2: Convert to fraction form
    118,534.48/177,810.90 = 39,649.12/x
  3. Step 3: Cross multiply
    118,534.48x = 177,810.90 × 39,649.12
  4. Step 4: Simplify right side
    118,534.48x = 7,050,045,711.41
  5. Step 5: Solve for x
    x = 7,050,045,711.41/118,534.48
  6. Step 6: Final answer
    x = 59,476.75

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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.