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Finding the Fourth Proportional to 100,777.72, 139,058.58 and 60,482.92

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Solution

The fourth proportional to 100,777.72, 139,058.58 and 60,482.92 is: 83,457.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,777.72 : 139,058.58 = 60,482.92 : x
  2. Step 2: Convert to fraction form
    100,777.72/139,058.58 = 60,482.92/x
  3. Step 3: Cross multiply
    100,777.72x = 139,058.58 × 60,482.92
  4. Step 4: Simplify right side
    100,777.72x = 8,410,668,969.45
  5. Step 5: Solve for x
    x = 8,410,668,969.45/100,777.72
  6. Step 6: Final answer
    x = 83,457.62

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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.