Home / 103,698.34-143,117.63-58,385.32

Finding the Fourth Proportional to 103,698.34, 143,117.63 and 58,385.32

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Solution

The fourth proportional to 103,698.34, 143,117.63 and 58,385.32 is: 80,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,698.34 : 143,117.63 = 58,385.32 : x
  2. Step 2: Convert to fraction form
    103,698.34/143,117.63 = 58,385.32/x
  3. Step 3: Cross multiply
    103,698.34x = 143,117.63 × 58,385.32
  4. Step 4: Simplify right side
    103,698.34x = 8,355,968,625.19
  5. Step 5: Solve for x
    x = 8,355,968,625.19/103,698.34
  6. Step 6: Final answer
    x = 80,579.58

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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.