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Finding the Fourth Proportional to 118,543.40, 177,555.90 and 92,040.20

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Solution

The fourth proportional to 118,543.40, 177,555.90 and 92,040.20 is: 137,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,543.40 : 177,555.90 = 92,040.20 : x
  2. Step 2: Convert to fraction form
    118,543.40/177,555.90 = 92,040.20/x
  3. Step 3: Cross multiply
    118,543.40x = 177,555.90 × 92,040.20
  4. Step 4: Simplify right side
    118,543.40x = 16,342,280,547.18
  5. Step 5: Solve for x
    x = 16,342,280,547.18/118,543.40
  6. Step 6: Final answer
    x = 137,859.05

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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.