Home / 155,881.69-215,116.63-84,261.71

Finding the Fourth Proportional to 155,881.69, 215,116.63 and 84,261.71

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Solution

The fourth proportional to 155,881.69, 215,116.63 and 84,261.71 is: 116,281.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,881.69 : 215,116.63 = 84,261.71 : x
  2. Step 2: Convert to fraction form
    155,881.69/215,116.63 = 84,261.71/x
  3. Step 3: Cross multiply
    155,881.69x = 215,116.63 × 84,261.71
  4. Step 4: Simplify right side
    155,881.69x = 18,126,095,093.24
  5. Step 5: Solve for x
    x = 18,126,095,093.24/155,881.69
  6. Step 6: Final answer
    x = 116,281.10

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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.