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Finding the Fourth Proportional to 118,342.84, 177,602.42 and 86,834.32

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Solution

The fourth proportional to 118,342.84, 177,602.42 and 86,834.32 is: 130,316.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,342.84 : 177,602.42 = 86,834.32 : x
  2. Step 2: Convert to fraction form
    118,342.84/177,602.42 = 86,834.32/x
  3. Step 3: Cross multiply
    118,342.84x = 177,602.42 × 86,834.32
  4. Step 4: Simplify right side
    118,342.84x = 15,421,984,048.87
  5. Step 5: Solve for x
    x = 15,421,984,048.87/118,342.84
  6. Step 6: Final answer
    x = 130,316.16

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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.