Home / 102,946.64-142,155-64,769.83

Finding the Fourth Proportional to 102,946.64, 142,155 and 64,769.83

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Solution

The fourth proportional to 102,946.64, 142,155 and 64,769.83 is: 89,438.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,946.64 : 142,155 = 64,769.83 : x
  2. Step 2: Convert to fraction form
    102,946.64/142,155 = 64,769.83/x
  3. Step 3: Cross multiply
    102,946.64x = 142,155 × 64,769.83
  4. Step 4: Simplify right side
    102,946.64x = 9,207,354,828.26
  5. Step 5: Solve for x
    x = 9,207,354,828.26/102,946.64
  6. Step 6: Final answer
    x = 89,438.13

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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.