Home / 161,712.90-242,569.35-90,854.10

Finding the Fourth Proportional to 161,712.90, 242,569.35 and 90,854.10

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Solution

The fourth proportional to 161,712.90, 242,569.35 and 90,854.10 is: 136,281.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,712.90 : 242,569.35 = 90,854.10 : x
  2. Step 2: Convert to fraction form
    161,712.90/242,569.35 = 90,854.10/x
  3. Step 3: Cross multiply
    161,712.90x = 242,569.35 × 90,854.10
  4. Step 4: Simplify right side
    161,712.90x = 22,038,419,981.84
  5. Step 5: Solve for x
    x = 22,038,419,981.84/161,712.90
  6. Step 6: Final answer
    x = 136,281.15

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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.