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Finding the Fourth Proportional to 118,553.52, 163,618.75 and 77,751.93

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Solution

The fourth proportional to 118,553.52, 163,618.75 and 77,751.93 is: 107,307.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,553.52 : 163,618.75 = 77,751.93 : x
  2. Step 2: Convert to fraction form
    118,553.52/163,618.75 = 77,751.93/x
  3. Step 3: Cross multiply
    118,553.52x = 163,618.75 × 77,751.93
  4. Step 4: Simplify right side
    118,553.52x = 12,721,674,307.45
  5. Step 5: Solve for x
    x = 12,721,674,307.45/118,553.52
  6. Step 6: Final answer
    x = 107,307.43

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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.