Home / 103,683.52-143,127.40-69,711.72

Finding the Fourth Proportional to 103,683.52, 143,127.40 and 69,711.72

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Solution

The fourth proportional to 103,683.52, 143,127.40 and 69,711.72 is: 96,231.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,683.52 : 143,127.40 = 69,711.72 : x
  2. Step 2: Convert to fraction form
    103,683.52/143,127.40 = 69,711.72/x
  3. Step 3: Cross multiply
    103,683.52x = 143,127.40 × 69,711.72
  4. Step 4: Simplify right side
    103,683.52x = 9,977,657,233.13
  5. Step 5: Solve for x
    x = 9,977,657,233.13/103,683.52
  6. Step 6: Final answer
    x = 96,231.85

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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.