Home / 115,423.07-159,291.86-64,445.81

Finding the Fourth Proportional to 115,423.07, 159,291.86 and 64,445.81

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Solution

The fourth proportional to 115,423.07, 159,291.86 and 64,445.81 is: 88,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,423.07 : 159,291.86 = 64,445.81 : x
  2. Step 2: Convert to fraction form
    115,423.07/159,291.86 = 64,445.81/x
  3. Step 3: Cross multiply
    115,423.07x = 159,291.86 × 64,445.81
  4. Step 4: Simplify right side
    115,423.07x = 10,265,693,020.11
  5. Step 5: Solve for x
    x = 10,265,693,020.11/115,423.07
  6. Step 6: Final answer
    x = 88,939.70

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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.