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Finding the Fourth Proportional to 144,512.90, 216,623.55 and 65,683.70

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Solution

The fourth proportional to 144,512.90, 216,623.55 and 65,683.70 is: 98,459.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,512.90 : 216,623.55 = 65,683.70 : x
  2. Step 2: Convert to fraction form
    144,512.90/216,623.55 = 65,683.70/x
  3. Step 3: Cross multiply
    144,512.90x = 216,623.55 × 65,683.70
  4. Step 4: Simplify right side
    144,512.90x = 14,228,636,271.14
  5. Step 5: Solve for x
    x = 14,228,636,271.14/144,512.90
  6. Step 6: Final answer
    x = 98,459.28

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1.5x scale

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.