Home / 100,904.47-139,248.18-58,487.60

Finding the Fourth Proportional to 100,904.47, 139,248.18 and 58,487.60

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Solution

The fourth proportional to 100,904.47, 139,248.18 and 58,487.60 is: 80,712.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,904.47 : 139,248.18 = 58,487.60 : x
  2. Step 2: Convert to fraction form
    100,904.47/139,248.18 = 58,487.60/x
  3. Step 3: Cross multiply
    100,904.47x = 139,248.18 × 58,487.60
  4. Step 4: Simplify right side
    100,904.47x = 8,144,291,852.57
  5. Step 5: Solve for x
    x = 8,144,291,852.57/100,904.47
  6. Step 6: Final answer
    x = 80,712.89

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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.