Home / 152,127.21-209,931.60-84,142.50

Finding the Fourth Proportional to 152,127.21, 209,931.60 and 84,142.50

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Solution

The fourth proportional to 152,127.21, 209,931.60 and 84,142.50 is: 116,114.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,127.21 : 209,931.60 = 84,142.50 : x
  2. Step 2: Convert to fraction form
    152,127.21/209,931.60 = 84,142.50/x
  3. Step 3: Cross multiply
    152,127.21x = 209,931.60 × 84,142.50
  4. Step 4: Simplify right side
    152,127.21x = 17,664,169,653
  5. Step 5: Solve for x
    x = 17,664,169,653/152,127.21
  6. Step 6: Final answer
    x = 116,114.47

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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.