Home / 145,685.28-218,470.47-70,783.23

Finding the Fourth Proportional to 145,685.28, 218,470.47 and 70,783.23

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Solution

The fourth proportional to 145,685.28, 218,470.47 and 70,783.23 is: 106,146.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,685.28 : 218,470.47 = 70,783.23 : x
  2. Step 2: Convert to fraction form
    145,685.28/218,470.47 = 70,783.23/x
  3. Step 3: Cross multiply
    145,685.28x = 218,470.47 × 70,783.23
  4. Step 4: Simplify right side
    145,685.28x = 15,464,045,526.22
  5. Step 5: Solve for x
    x = 15,464,045,526.22/145,685.28
  6. Step 6: Final answer
    x = 106,146.93

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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.