Home / 115,159.65-172,349.33-70,814.49

Finding the Fourth Proportional to 115,159.65, 172,349.33 and 70,814.49

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Solution

The fourth proportional to 115,159.65, 172,349.33 and 70,814.49 is: 105,981.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,159.65 : 172,349.33 = 70,814.49 : x
  2. Step 2: Convert to fraction form
    115,159.65/172,349.33 = 70,814.49/x
  3. Step 3: Cross multiply
    115,159.65x = 172,349.33 × 70,814.49
  4. Step 4: Simplify right side
    115,159.65x = 12,204,829,551.72
  5. Step 5: Solve for x
    x = 12,204,829,551.72/115,159.65
  6. Step 6: Final answer
    x = 105,981.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.