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Finding the Fourth Proportional to 130,185, 179,655.32 and 70,569

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Solution

The fourth proportional to 130,185, 179,655.32 and 70,569 is: 97,385.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,185 : 179,655.32 = 70,569 : x
  2. Step 2: Convert to fraction form
    130,185/179,655.32 = 70,569/x
  3. Step 3: Cross multiply
    130,185x = 179,655.32 × 70,569
  4. Step 4: Simplify right side
    130,185x = 12,678,096,277.08
  5. Step 5: Solve for x
    x = 12,678,096,277.08/130,185
  6. Step 6: Final answer
    x = 97,385.23

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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.