Home / 99,261.47-148,898.70-72,686.99

Finding the Fourth Proportional to 99,261.47, 148,898.70 and 72,686.99

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Solution

The fourth proportional to 99,261.47, 148,898.70 and 72,686.99 is: 109,035.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,261.47 : 148,898.70 = 72,686.99 : x
  2. Step 2: Convert to fraction form
    99,261.47/148,898.70 = 72,686.99/x
  3. Step 3: Cross multiply
    99,261.47x = 148,898.70 × 72,686.99
  4. Step 4: Simplify right side
    99,261.47x = 10,822,998,690.16
  5. Step 5: Solve for x
    x = 10,822,998,690.16/99,261.47
  6. Step 6: Final answer
    x = 109,035.24

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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.