Home / 145,409.42-218,177.86-70,587.02

Finding the Fourth Proportional to 145,409.42, 218,177.86 and 70,587.02

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Solution

The fourth proportional to 145,409.42, 218,177.86 and 70,587.02 is: 105,911.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,409.42 : 218,177.86 = 70,587.02 : x
  2. Step 2: Convert to fraction form
    145,409.42/218,177.86 = 70,587.02/x
  3. Step 3: Cross multiply
    145,409.42x = 218,177.86 × 70,587.02
  4. Step 4: Simplify right side
    145,409.42x = 15,400,524,967.38
  5. Step 5: Solve for x
    x = 15,400,524,967.38/145,409.42
  6. Step 6: Final answer
    x = 105,911.47

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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.