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Finding the Fourth Proportional to 130,476, 180,059.04 and 70,860

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Solution

The fourth proportional to 130,476, 180,059.04 and 70,860 is: 97,787.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,476 : 180,059.04 = 70,860 : x
  2. Step 2: Convert to fraction form
    130,476/180,059.04 = 70,860/x
  3. Step 3: Cross multiply
    130,476x = 180,059.04 × 70,860
  4. Step 4: Simplify right side
    130,476x = 12,758,983,574.40
  5. Step 5: Solve for x
    x = 12,758,983,574.40/130,476
  6. Step 6: Final answer
    x = 97,787.97

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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.