Home / 103,387.36-142,678.96-58,679.52

Finding the Fourth Proportional to 103,387.36, 142,678.96 and 58,679.52

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Solution

The fourth proportional to 103,387.36, 142,678.96 and 58,679.52 is: 80,980.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,387.36 : 142,678.96 = 58,679.52 : x
  2. Step 2: Convert to fraction form
    103,387.36/142,678.96 = 58,679.52/x
  3. Step 3: Cross multiply
    103,387.36x = 142,678.96 × 58,679.52
  4. Step 4: Simplify right side
    103,387.36x = 8,372,332,886.90
  5. Step 5: Solve for x
    x = 8,372,332,886.90/103,387.36
  6. Step 6: Final answer
    x = 80,980.24

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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.