Home / 105,439.23-145,491.80-62,988.75

Finding the Fourth Proportional to 105,439.23, 145,491.80 and 62,988.75

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Solution

The fourth proportional to 105,439.23, 145,491.80 and 62,988.75 is: 86,915.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,439.23 : 145,491.80 = 62,988.75 : x
  2. Step 2: Convert to fraction form
    105,439.23/145,491.80 = 62,988.75/x
  3. Step 3: Cross multiply
    105,439.23x = 145,491.80 × 62,988.75
  4. Step 4: Simplify right side
    105,439.23x = 9,164,346,302.31
  5. Step 5: Solve for x
    x = 9,164,346,302.31/105,439.23
  6. Step 6: Final answer
    x = 86,915.91

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1.5x scale

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.