Home / 103,972.32-143,518.57-61,530.75

Finding the Fourth Proportional to 103,972.32, 143,518.57 and 61,530.75

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Solution

The fourth proportional to 103,972.32, 143,518.57 and 61,530.75 is: 84,934.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,972.32 : 143,518.57 = 61,530.75 : x
  2. Step 2: Convert to fraction form
    103,972.32/143,518.57 = 61,530.75/x
  3. Step 3: Cross multiply
    103,972.32x = 143,518.57 × 61,530.75
  4. Step 4: Simplify right side
    103,972.32x = 8,830,805,097.20
  5. Step 5: Solve for x
    x = 8,830,805,097.20/103,972.32
  6. Step 6: Final answer
    x = 84,934.19

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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.