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Finding the Fourth Proportional to 118,645, 177,967.52 and 39,759.40

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Solution

The fourth proportional to 118,645, 177,967.52 and 39,759.40 is: 59,639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,645 : 177,967.52 = 39,759.40 : x
  2. Step 2: Convert to fraction form
    118,645/177,967.52 = 39,759.40/x
  3. Step 3: Cross multiply
    118,645x = 177,967.52 × 39,759.40
  4. Step 4: Simplify right side
    118,645x = 7,075,881,814.69
  5. Step 5: Solve for x
    x = 7,075,881,814.69/118,645
  6. Step 6: Final answer
    x = 59,639.11

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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.