Home / 105,688.40-158,553.28-39,129.12

Finding the Fourth Proportional to 105,688.40, 158,553.28 and 39,129.12

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Solution

The fourth proportional to 105,688.40, 158,553.28 and 39,129.12 is: 58,701.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,688.40 : 158,553.28 = 39,129.12 : x
  2. Step 2: Convert to fraction form
    105,688.40/158,553.28 = 39,129.12/x
  3. Step 3: Cross multiply
    105,688.40x = 158,553.28 × 39,129.12
  4. Step 4: Simplify right side
    105,688.40x = 6,204,050,319.51
  5. Step 5: Solve for x
    x = 6,204,050,319.51/105,688.40
  6. Step 6: Final answer
    x = 58,701.34

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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.