Home / 102,639.80-153,959.70-97,828.40

Finding the Fourth Proportional to 102,639.80, 153,959.70 and 97,828.40

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Solution

The fourth proportional to 102,639.80, 153,959.70 and 97,828.40 is: 146,742.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,639.80 : 153,959.70 = 97,828.40 : x
  2. Step 2: Convert to fraction form
    102,639.80/153,959.70 = 97,828.40/x
  3. Step 3: Cross multiply
    102,639.80x = 153,959.70 × 97,828.40
  4. Step 4: Simplify right side
    102,639.80x = 15,061,631,115.48
  5. Step 5: Solve for x
    x = 15,061,631,115.48/102,639.80
  6. Step 6: Final answer
    x = 146,742.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.