Home / 147,643.40-221,465.10-103,406.60

Finding the Fourth Proportional to 147,643.40, 221,465.10 and 103,406.60

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Solution

The fourth proportional to 147,643.40, 221,465.10 and 103,406.60 is: 155,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,643.40 : 221,465.10 = 103,406.60 : x
  2. Step 2: Convert to fraction form
    147,643.40/221,465.10 = 103,406.60/x
  3. Step 3: Cross multiply
    147,643.40x = 221,465.10 × 103,406.60
  4. Step 4: Simplify right side
    147,643.40x = 22,900,953,009.66
  5. Step 5: Solve for x
    x = 22,900,953,009.66/147,643.40
  6. Step 6: Final answer
    x = 155,109.90

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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.