Home / 148,931.04-205,541.04-85,289.76

Finding the Fourth Proportional to 148,931.04, 205,541.04 and 85,289.76

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Solution

The fourth proportional to 148,931.04, 205,541.04 and 85,289.76 is: 117,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,931.04 : 205,541.04 = 85,289.76 : x
  2. Step 2: Convert to fraction form
    148,931.04/205,541.04 = 85,289.76/x
  3. Step 3: Cross multiply
    148,931.04x = 205,541.04 × 85,289.76
  4. Step 4: Simplify right side
    148,931.04x = 17,530,545,971.75
  5. Step 5: Solve for x
    x = 17,530,545,971.75/148,931.04
  6. Step 6: Final answer
    x = 117,709.15

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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.