Home / 103,439.18-142,762.70-96,685.47

Finding the Fourth Proportional to 103,439.18, 142,762.70 and 96,685.47

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Solution

The fourth proportional to 103,439.18, 142,762.70 and 96,685.47 is: 133,441.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,439.18 : 142,762.70 = 96,685.47 : x
  2. Step 2: Convert to fraction form
    103,439.18/142,762.70 = 96,685.47/x
  3. Step 3: Cross multiply
    103,439.18x = 142,762.70 × 96,685.47
  4. Step 4: Simplify right side
    103,439.18x = 13,803,078,989.68
  5. Step 5: Solve for x
    x = 13,803,078,989.68/103,439.18
  6. Step 6: Final answer
    x = 133,441.49

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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.