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Finding the Fourth Proportional to 115,307.70, 159,124.65 and 65,006.70

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Solution

The fourth proportional to 115,307.70, 159,124.65 and 65,006.70 is: 89,709.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,307.70 : 159,124.65 = 65,006.70 : x
  2. Step 2: Convert to fraction form
    115,307.70/159,124.65 = 65,006.70/x
  3. Step 3: Cross multiply
    115,307.70x = 159,124.65 × 65,006.70
  4. Step 4: Simplify right side
    115,307.70x = 10,344,168,385.16
  5. Step 5: Solve for x
    x = 10,344,168,385.16/115,307.70
  6. Step 6: Final answer
    x = 89,709.26

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1.5x scale

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.