Home / 105,307.68-145,324.89-62,865.30

Finding the Fourth Proportional to 105,307.68, 145,324.89 and 62,865.30

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Solution

The fourth proportional to 105,307.68, 145,324.89 and 62,865.30 is: 86,754.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,307.68 : 145,324.89 = 62,865.30 : x
  2. Step 2: Convert to fraction form
    105,307.68/145,324.89 = 62,865.30/x
  3. Step 3: Cross multiply
    105,307.68x = 145,324.89 × 62,865.30
  4. Step 4: Simplify right side
    105,307.68x = 9,135,892,807.32
  5. Step 5: Solve for x
    x = 9,135,892,807.32/105,307.68
  6. Step 6: Final answer
    x = 86,754.29

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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.