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Finding the Fourth Proportional to 162,308.54, 223,981.58 and 90,689.06

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Solution

The fourth proportional to 162,308.54, 223,981.58 and 90,689.06 is: 125,148.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,308.54 : 223,981.58 = 90,689.06 : x
  2. Step 2: Convert to fraction form
    162,308.54/223,981.58 = 90,689.06/x
  3. Step 3: Cross multiply
    162,308.54x = 223,981.58 × 90,689.06
  4. Step 4: Simplify right side
    162,308.54x = 20,312,677,374.16
  5. Step 5: Solve for x
    x = 20,312,677,374.16/162,308.54
  6. Step 6: Final answer
    x = 125,148.55

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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.