Home / 103,189.87-142,341.46-64,888.62

Finding the Fourth Proportional to 103,189.87, 142,341.46 and 64,888.62

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Solution

The fourth proportional to 103,189.87, 142,341.46 and 64,888.62 is: 89,508.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,189.87 : 142,341.46 = 64,888.62 : x
  2. Step 2: Convert to fraction form
    103,189.87/142,341.46 = 64,888.62/x
  3. Step 3: Cross multiply
    103,189.87x = 142,341.46 × 64,888.62
  4. Step 4: Simplify right side
    103,189.87x = 9,236,340,908.19
  5. Step 5: Solve for x
    x = 9,236,340,908.19/103,189.87
  6. Step 6: Final answer
    x = 89,508.21

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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.