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Finding the Fourth Proportional to 118,307.90, 163,265.28 and 75,866.60

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Solution

The fourth proportional to 118,307.90, 163,265.28 and 75,866.60 is: 104,696.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,307.90 : 163,265.28 = 75,866.60 : x
  2. Step 2: Convert to fraction form
    118,307.90/163,265.28 = 75,866.60/x
  3. Step 3: Cross multiply
    118,307.90x = 163,265.28 × 75,866.60
  4. Step 4: Simplify right side
    118,307.90x = 12,386,381,815.31
  5. Step 5: Solve for x
    x = 12,386,381,815.31/118,307.90
  6. Step 6: Final answer
    x = 104,696.15

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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.