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Finding the Fourth Proportional to 100,653.40, 151,271.70 and 98,903.80

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Solution

The fourth proportional to 100,653.40, 151,271.70 and 98,903.80 is: 148,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,653.40 : 151,271.70 = 98,903.80 : x
  2. Step 2: Convert to fraction form
    100,653.40/151,271.70 = 98,903.80/x
  3. Step 3: Cross multiply
    100,653.40x = 151,271.70 × 98,903.80
  4. Step 4: Simplify right side
    100,653.40x = 14,961,345,962.46
  5. Step 5: Solve for x
    x = 14,961,345,962.46/100,653.40
  6. Step 6: Final answer
    x = 148,642.23

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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.