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Finding the Fourth Proportional to 102,870.65, 141,883 and 88,554

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Solution

The fourth proportional to 102,870.65, 141,883 and 88,554 is: 122,136.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,870.65 : 141,883 = 88,554 : x
  2. Step 2: Convert to fraction form
    102,870.65/141,883 = 88,554/x
  3. Step 3: Cross multiply
    102,870.65x = 141,883 × 88,554
  4. Step 4: Simplify right side
    102,870.65x = 12,564,307,182
  5. Step 5: Solve for x
    x = 12,564,307,182/102,870.65
  6. Step 6: Final answer
    x = 122,136.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.