Home / 155,401.19-214,451.42-86,490.20

Finding the Fourth Proportional to 155,401.19, 214,451.42 and 86,490.20

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Solution

The fourth proportional to 155,401.19, 214,451.42 and 86,490.20 is: 119,355.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,401.19 : 214,451.42 = 86,490.20 : x
  2. Step 2: Convert to fraction form
    155,401.19/214,451.42 = 86,490.20/x
  3. Step 3: Cross multiply
    155,401.19x = 214,451.42 × 86,490.20
  4. Step 4: Simplify right side
    155,401.19x = 18,547,944,701.38
  5. Step 5: Solve for x
    x = 18,547,944,701.38/155,401.19
  6. Step 6: Final answer
    x = 119,355.23

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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.