Home / 103,698.09-143,117.28-58,385.07

Finding the Fourth Proportional to 103,698.09, 143,117.28 and 58,385.07

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Solution

The fourth proportional to 103,698.09, 143,117.28 and 58,385.07 is: 80,579.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,698.09 : 143,117.28 = 58,385.07 : x
  2. Step 2: Convert to fraction form
    103,698.09/143,117.28 = 58,385.07/x
  3. Step 3: Cross multiply
    103,698.09x = 143,117.28 × 58,385.07
  4. Step 4: Simplify right side
    103,698.09x = 8,355,912,411.01
  5. Step 5: Solve for x
    x = 8,355,912,411.01/103,698.09
  6. Step 6: Final answer
    x = 80,579.23

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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.