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Finding the Fourth Proportional to 118,412.60, 163,404.59 and 64,699.47

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Solution

The fourth proportional to 118,412.60, 163,404.59 and 64,699.47 is: 89,282.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,412.60 : 163,404.59 = 64,699.47 : x
  2. Step 2: Convert to fraction form
    118,412.60/163,404.59 = 64,699.47/x
  3. Step 3: Cross multiply
    118,412.60x = 163,404.59 × 64,699.47
  4. Step 4: Simplify right side
    118,412.60x = 10,572,190,657.84
  5. Step 5: Solve for x
    x = 10,572,190,657.84/118,412.60
  6. Step 6: Final answer
    x = 89,282.65

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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.