Home / 105,487.90-158,232.51-43,158.40

Finding the Fourth Proportional to 105,487.90, 158,232.51 and 43,158.40

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Solution

The fourth proportional to 105,487.90, 158,232.51 and 43,158.40 is: 64,737.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,487.90 : 158,232.51 = 43,158.40 : x
  2. Step 2: Convert to fraction form
    105,487.90/158,232.51 = 43,158.40/x
  3. Step 3: Cross multiply
    105,487.90x = 158,232.51 × 43,158.40
  4. Step 4: Simplify right side
    105,487.90x = 6,829,061,959.58
  5. Step 5: Solve for x
    x = 6,829,061,959.58/105,487.90
  6. Step 6: Final answer
    x = 64,737.87

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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.