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Finding the Fourth Proportional to 151,572.90, 209,166.80 and 83,587.70

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Solution

The fourth proportional to 151,572.90, 209,166.80 and 83,587.70 is: 115,348.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,572.90 : 209,166.80 = 83,587.70 : x
  2. Step 2: Convert to fraction form
    151,572.90/209,166.80 = 83,587.70/x
  3. Step 3: Cross multiply
    151,572.90x = 209,166.80 × 83,587.70
  4. Step 4: Simplify right side
    151,572.90x = 17,483,771,728.36
  5. Step 5: Solve for x
    x = 17,483,771,728.36/151,572.90
  6. Step 6: Final answer
    x = 115,348.93

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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.