Home / 103,406.15-142,710.93-63,143.48

Finding the Fourth Proportional to 103,406.15, 142,710.93 and 63,143.48

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Solution

The fourth proportional to 103,406.15, 142,710.93 and 63,143.48 is: 87,144.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,406.15 : 142,710.93 = 63,143.48 : x
  2. Step 2: Convert to fraction form
    103,406.15/142,710.93 = 63,143.48/x
  3. Step 3: Cross multiply
    103,406.15x = 142,710.93 × 63,143.48
  4. Step 4: Simplify right side
    103,406.15x = 9,011,264,040.68
  5. Step 5: Solve for x
    x = 9,011,264,040.68/103,406.15
  6. Step 6: Final answer
    x = 87,144.38

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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.