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Finding the Fourth Proportional to 129,924, 179,295.12 and 70,308

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Solution

The fourth proportional to 129,924, 179,295.12 and 70,308 is: 97,025.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,924 : 179,295.12 = 70,308 : x
  2. Step 2: Convert to fraction form
    129,924/179,295.12 = 70,308/x
  3. Step 3: Cross multiply
    129,924x = 179,295.12 × 70,308
  4. Step 4: Simplify right side
    129,924x = 12,605,881,296.96
  5. Step 5: Solve for x
    x = 12,605,881,296.96/129,924
  6. Step 6: Final answer
    x = 97,025.04

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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.