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Finding the Fourth Proportional to 103,543.56, 142,889.40 and 58,831.56

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Solution

The fourth proportional to 103,543.56, 142,889.40 and 58,831.56 is: 81,187.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,543.56 : 142,889.40 = 58,831.56 : x
  2. Step 2: Convert to fraction form
    103,543.56/142,889.40 = 58,831.56/x
  3. Step 3: Cross multiply
    103,543.56x = 142,889.40 × 58,831.56
  4. Step 4: Simplify right side
    103,543.56x = 8,406,406,309.46
  5. Step 5: Solve for x
    x = 8,406,406,309.46/103,543.56
  6. Step 6: Final answer
    x = 81,187.15

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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.