Home / 147,808.20-221,712.30-139,643.40

Finding the Fourth Proportional to 147,808.20, 221,712.30 and 139,643.40

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Solution

The fourth proportional to 147,808.20, 221,712.30 and 139,643.40 is: 209,465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,808.20 : 221,712.30 = 139,643.40 : x
  2. Step 2: Convert to fraction form
    147,808.20/221,712.30 = 139,643.40/x
  3. Step 3: Cross multiply
    147,808.20x = 221,712.30 × 139,643.40
  4. Step 4: Simplify right side
    147,808.20x = 30,960,659,393.82
  5. Step 5: Solve for x
    x = 30,960,659,393.82/147,808.20
  6. Step 6: Final answer
    x = 209,465.10

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1.5x scale

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.