Home / 103,681.10-155,521.65-68,045.90

Finding the Fourth Proportional to 103,681.10, 155,521.65 and 68,045.90

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Solution

The fourth proportional to 103,681.10, 155,521.65 and 68,045.90 is: 102,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,681.10 : 155,521.65 = 68,045.90 : x
  2. Step 2: Convert to fraction form
    103,681.10/155,521.65 = 68,045.90/x
  3. Step 3: Cross multiply
    103,681.10x = 155,521.65 × 68,045.90
  4. Step 4: Simplify right side
    103,681.10x = 10,582,610,643.74
  5. Step 5: Solve for x
    x = 10,582,610,643.74/103,681.10
  6. Step 6: Final answer
    x = 102,068.85

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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.