Home / 103,478.60-142,792.58-58,148.01

Finding the Fourth Proportional to 103,478.60, 142,792.58 and 58,148.01

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Solution

The fourth proportional to 103,478.60, 142,792.58 and 58,148.01 is: 80,239.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,478.60 : 142,792.58 = 58,148.01 : x
  2. Step 2: Convert to fraction form
    103,478.60/142,792.58 = 58,148.01/x
  3. Step 3: Cross multiply
    103,478.60x = 142,792.58 × 58,148.01
  4. Step 4: Simplify right side
    103,478.60x = 8,303,104,369.77
  5. Step 5: Solve for x
    x = 8,303,104,369.77/103,478.60
  6. Step 6: Final answer
    x = 80,239.82

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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.