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Finding the Fourth Proportional to 143,959.50, 216,017.01 and 70,087.50

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Solution

The fourth proportional to 143,959.50, 216,017.01 and 70,087.50 is: 105,169.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,959.50 : 216,017.01 = 70,087.50 : x
  2. Step 2: Convert to fraction form
    143,959.50/216,017.01 = 70,087.50/x
  3. Step 3: Cross multiply
    143,959.50x = 216,017.01 × 70,087.50
  4. Step 4: Simplify right side
    143,959.50x = 15,140,092,188.38
  5. Step 5: Solve for x
    x = 15,140,092,188.38/143,959.50
  6. Step 6: Final answer
    x = 105,169.11

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1.5x scale

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.