Home / 145,685.15-218,561.53-45,842.74

Finding the Fourth Proportional to 145,685.15, 218,561.53 and 45,842.74

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Solution

The fourth proportional to 145,685.15, 218,561.53 and 45,842.74 is: 68,774.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,685.15 : 218,561.53 = 45,842.74 : x
  2. Step 2: Convert to fraction form
    145,685.15/218,561.53 = 45,842.74/x
  3. Step 3: Cross multiply
    145,685.15x = 218,561.53 × 45,842.74
  4. Step 4: Simplify right side
    145,685.15x = 10,019,459,393.79
  5. Step 5: Solve for x
    x = 10,019,459,393.79/145,685.15
  6. Step 6: Final answer
    x = 68,774.75

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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.