Home / 103,112.61-142,282.76-62,811.74

Finding the Fourth Proportional to 103,112.61, 142,282.76 and 62,811.74

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Solution

The fourth proportional to 103,112.61, 142,282.76 and 62,811.74 is: 86,672.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,112.61 : 142,282.76 = 62,811.74 : x
  2. Step 2: Convert to fraction form
    103,112.61/142,282.76 = 62,811.74/x
  3. Step 3: Cross multiply
    103,112.61x = 142,282.76 × 62,811.74
  4. Step 4: Simplify right side
    103,112.61x = 8,937,026,702.13
  5. Step 5: Solve for x
    x = 8,937,026,702.13/103,112.61
  6. Step 6: Final answer
    x = 86,672.49

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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.