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Finding the Fourth Proportional to 162,300.53, 223,970.63 and 90,681.11

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Solution

The fourth proportional to 162,300.53, 223,970.63 and 90,681.11 is: 125,137.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,300.53 : 223,970.63 = 90,681.11 : x
  2. Step 2: Convert to fraction form
    162,300.53/223,970.63 = 90,681.11/x
  3. Step 3: Cross multiply
    162,300.53x = 223,970.63 × 90,681.11
  4. Step 4: Simplify right side
    162,300.53x = 20,309,905,335.80
  5. Step 5: Solve for x
    x = 20,309,905,335.80/162,300.53
  6. Step 6: Final answer
    x = 125,137.64

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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.