Home / 109,420.10-151,124.30-73,547.83

Finding the Fourth Proportional to 109,420.10, 151,124.30 and 73,547.83

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Solution

The fourth proportional to 109,420.10, 151,124.30 and 73,547.83 is: 101,579.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,420.10 : 151,124.30 = 73,547.83 : x
  2. Step 2: Convert to fraction form
    109,420.10/151,124.30 = 73,547.83/x
  3. Step 3: Cross multiply
    109,420.10x = 151,124.30 × 73,547.83
  4. Step 4: Simplify right side
    109,420.10x = 11,114,863,957.53
  5. Step 5: Solve for x
    x = 11,114,863,957.53/109,420.10
  6. Step 6: Final answer
    x = 101,579.73

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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.