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Finding the Fourth Proportional to 130,341, 179,870.58 and 70,725

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Solution

The fourth proportional to 130,341, 179,870.58 and 70,725 is: 97,600.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,341 : 179,870.58 = 70,725 : x
  2. Step 2: Convert to fraction form
    130,341/179,870.58 = 70,725/x
  3. Step 3: Cross multiply
    130,341x = 179,870.58 × 70,725
  4. Step 4: Simplify right side
    130,341x = 12,721,346,770.50
  5. Step 5: Solve for x
    x = 12,721,346,770.50/130,341
  6. Step 6: Final answer
    x = 97,600.50

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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.