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Finding the Fourth Proportional to 130,937.40, 180,693.84 and 74,348.76

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Solution

The fourth proportional to 130,937.40, 180,693.84 and 74,348.76 is: 102,601.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,937.40 : 180,693.84 = 74,348.76 : x
  2. Step 2: Convert to fraction form
    130,937.40/180,693.84 = 74,348.76/x
  3. Step 3: Cross multiply
    130,937.40x = 180,693.84 × 74,348.76
  4. Step 4: Simplify right side
    130,937.40x = 13,434,362,943.64
  5. Step 5: Solve for x
    x = 13,434,362,943.64/130,937.40
  6. Step 6: Final answer
    x = 102,601.42

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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.