Home / 118,338.03-163,397.05-78,108.98

Finding the Fourth Proportional to 118,338.03, 163,397.05 and 78,108.98

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Solution

The fourth proportional to 118,338.03, 163,397.05 and 78,108.98 is: 107,850.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,338.03 : 163,397.05 = 78,108.98 : x
  2. Step 2: Convert to fraction form
    118,338.03/163,397.05 = 78,108.98/x
  3. Step 3: Cross multiply
    118,338.03x = 163,397.05 × 78,108.98
  4. Step 4: Simplify right side
    118,338.03x = 12,762,775,898.25
  5. Step 5: Solve for x
    x = 12,762,775,898.25/118,338.03
  6. Step 6: Final answer
    x = 107,850.16

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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.