Home / 159,019.16-219,444.81-87,397.70

Finding the Fourth Proportional to 159,019.16, 219,444.81 and 87,397.70

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Solution

The fourth proportional to 159,019.16, 219,444.81 and 87,397.70 is: 120,607.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,019.16 : 219,444.81 = 87,397.70 : x
  2. Step 2: Convert to fraction form
    159,019.16/219,444.81 = 87,397.70/x
  3. Step 3: Cross multiply
    159,019.16x = 219,444.81 × 87,397.70
  4. Step 4: Simplify right side
    159,019.16x = 19,178,971,670.94
  5. Step 5: Solve for x
    x = 19,178,971,670.94/159,019.16
  6. Step 6: Final answer
    x = 120,607.93

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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.