Home / 115,869.72-159,913.65-70,574.28

Finding the Fourth Proportional to 115,869.72, 159,913.65 and 70,574.28

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Solution

The fourth proportional to 115,869.72, 159,913.65 and 70,574.28 is: 97,400.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,869.72 : 159,913.65 = 70,574.28 : x
  2. Step 2: Convert to fraction form
    115,869.72/159,913.65 = 70,574.28/x
  3. Step 3: Cross multiply
    115,869.72x = 159,913.65 × 70,574.28
  4. Step 4: Simplify right side
    115,869.72x = 11,285,790,710.92
  5. Step 5: Solve for x
    x = 11,285,790,710.92/115,869.72
  6. Step 6: Final answer
    x = 97,400.69

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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.