Home / 147,941.48-221,721.60-128,888.94

Finding the Fourth Proportional to 147,941.48, 221,721.60 and 128,888.94

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Solution

The fourth proportional to 147,941.48, 221,721.60 and 128,888.94 is: 193,167.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,941.48 : 221,721.60 = 128,888.94 : x
  2. Step 2: Convert to fraction form
    147,941.48/221,721.60 = 128,888.94/x
  3. Step 3: Cross multiply
    147,941.48x = 221,721.60 × 128,888.94
  4. Step 4: Simplify right side
    147,941.48x = 28,577,461,999.10
  5. Step 5: Solve for x
    x = 28,577,461,999.10/147,941.48
  6. Step 6: Final answer
    x = 193,167.34

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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.