Home / 189,881.15-284,572.56-139,726.40

Finding the Fourth Proportional to 189,881.15, 284,572.56 and 139,726.40

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Solution

The fourth proportional to 189,881.15, 284,572.56 and 139,726.40 is: 209,406.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,881.15 : 284,572.56 = 139,726.40 : x
  2. Step 2: Convert to fraction form
    189,881.15/284,572.56 = 139,726.40/x
  3. Step 3: Cross multiply
    189,881.15x = 284,572.56 × 139,726.40
  4. Step 4: Simplify right side
    189,881.15x = 39,762,299,347.58
  5. Step 5: Solve for x
    x = 39,762,299,347.58/189,881.15
  6. Step 6: Final answer
    x = 209,406.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.