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Finding the Fourth Proportional to 159,316.61, 219,831.19 and 91,321.07

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Solution

The fourth proportional to 159,316.61, 219,831.19 and 91,321.07 is: 126,008.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,316.61 : 219,831.19 = 91,321.07 : x
  2. Step 2: Convert to fraction form
    159,316.61/219,831.19 = 91,321.07/x
  3. Step 3: Cross multiply
    159,316.61x = 219,831.19 × 91,321.07
  4. Step 4: Simplify right side
    159,316.61x = 20,075,218,162.71
  5. Step 5: Solve for x
    x = 20,075,218,162.71/159,316.61
  6. Step 6: Final answer
    x = 126,008.32

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1.5x scale

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.