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Finding the Fourth Proportional to 162,303.12, 223,980.12 and 89,715

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Solution

The fourth proportional to 162,303.12, 223,980.12 and 89,715 is: 123,807.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,303.12 : 223,980.12 = 89,715 : x
  2. Step 2: Convert to fraction form
    162,303.12/223,980.12 = 89,715/x
  3. Step 3: Cross multiply
    162,303.12x = 223,980.12 × 89,715
  4. Step 4: Simplify right side
    162,303.12x = 20,094,376,465.80
  5. Step 5: Solve for x
    x = 20,094,376,465.80/162,303.12
  6. Step 6: Final answer
    x = 123,807.70

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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.