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Finding the Fourth Proportional to 139,460.79, 192,457.40 and 75,798.60

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Solution

The fourth proportional to 139,460.79, 192,457.40 and 75,798.60 is: 104,602.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,460.79 : 192,457.40 = 75,798.60 : x
  2. Step 2: Convert to fraction form
    139,460.79/192,457.40 = 75,798.60/x
  3. Step 3: Cross multiply
    139,460.79x = 192,457.40 × 75,798.60
  4. Step 4: Simplify right side
    139,460.79x = 14,588,001,100.65
  5. Step 5: Solve for x
    x = 14,588,001,100.65/139,460.79
  6. Step 6: Final answer
    x = 104,602.89

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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.