Home / 103,030.22-142,108.64-64,287.55

Finding the Fourth Proportional to 103,030.22, 142,108.64 and 64,287.55

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Solution

The fourth proportional to 103,030.22, 142,108.64 and 64,287.55 is: 88,671.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,030.22 : 142,108.64 = 64,287.55 : x
  2. Step 2: Convert to fraction form
    103,030.22/142,108.64 = 64,287.55/x
  3. Step 3: Cross multiply
    103,030.22x = 142,108.64 × 64,287.55
  4. Step 4: Simplify right side
    103,030.22x = 9,135,816,986.71
  5. Step 5: Solve for x
    x = 9,135,816,986.71/103,030.22
  6. Step 6: Final answer
    x = 88,671.23

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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.