Home / 151,397.04-208,919.54-83,400.65

Finding the Fourth Proportional to 151,397.04, 208,919.54 and 83,400.65

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Solution

The fourth proportional to 151,397.04, 208,919.54 and 83,400.65 is: 115,088.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,397.04 : 208,919.54 = 83,400.65 : x
  2. Step 2: Convert to fraction form
    151,397.04/208,919.54 = 83,400.65/x
  3. Step 3: Cross multiply
    151,397.04x = 208,919.54 × 83,400.65
  4. Step 4: Simplify right side
    151,397.04x = 17,424,023,972.10
  5. Step 5: Solve for x
    x = 17,424,023,972.10/151,397.04
  6. Step 6: Final answer
    x = 115,088.27

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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.