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Finding the Fourth Proportional to 99,065.62, 148,831.71 and 80,714.26

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Solution

The fourth proportional to 99,065.62, 148,831.71 and 80,714.26 is: 121,261.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,065.62 : 148,831.71 = 80,714.26 : x
  2. Step 2: Convert to fraction form
    99,065.62/148,831.71 = 80,714.26/x
  3. Step 3: Cross multiply
    99,065.62x = 148,831.71 × 80,714.26
  4. Step 4: Simplify right side
    99,065.62x = 12,012,841,337.18
  5. Step 5: Solve for x
    x = 12,012,841,337.18/99,065.62
  6. Step 6: Final answer
    x = 121,261.46

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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.