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Finding the Fourth Proportional to 130,363.49, 179,904.17 and 85,070.45

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Solution

The fourth proportional to 130,363.49, 179,904.17 and 85,070.45 is: 117,398.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,363.49 : 179,904.17 = 85,070.45 : x
  2. Step 2: Convert to fraction form
    130,363.49/179,904.17 = 85,070.45/x
  3. Step 3: Cross multiply
    130,363.49x = 179,904.17 × 85,070.45
  4. Step 4: Simplify right side
    130,363.49x = 15,304,528,698.78
  5. Step 5: Solve for x
    x = 15,304,528,698.78/130,363.49
  6. Step 6: Final answer
    x = 117,398.89

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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.