Home / 151,543.10-209,130.93-83,562.78

Finding the Fourth Proportional to 151,543.10, 209,130.93 and 83,562.78

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Solution

The fourth proportional to 151,543.10, 209,130.93 and 83,562.78 is: 115,317.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,543.10 : 209,130.93 = 83,562.78 : x
  2. Step 2: Convert to fraction form
    151,543.10/209,130.93 = 83,562.78/x
  3. Step 3: Cross multiply
    151,543.10x = 209,130.93 × 83,562.78
  4. Step 4: Simplify right side
    151,543.10x = 17,475,561,894.79
  5. Step 5: Solve for x
    x = 17,475,561,894.79/151,543.10
  6. Step 6: Final answer
    x = 115,317.44

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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.