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Finding the Fourth Proportional to 115,655.87, 159,543.54 and 70,347.71

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Solution

The fourth proportional to 115,655.87, 159,543.54 and 70,347.71 is: 97,042.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,655.87 : 159,543.54 = 70,347.71 : x
  2. Step 2: Convert to fraction form
    115,655.87/159,543.54 = 70,347.71/x
  3. Step 3: Cross multiply
    115,655.87x = 159,543.54 × 70,347.71
  4. Step 4: Simplify right side
    115,655.87x = 11,223,523,083.15
  5. Step 5: Solve for x
    x = 11,223,523,083.15/115,655.87
  6. Step 6: Final answer
    x = 97,042.40

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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.