Home / 159,017.51-219,434.87-87,397.59

Finding the Fourth Proportional to 159,017.51, 219,434.87 and 87,397.59

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Solution

The fourth proportional to 159,017.51, 219,434.87 and 87,397.59 is: 120,603.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,017.51 : 219,434.87 = 87,397.59 : x
  2. Step 2: Convert to fraction form
    159,017.51/219,434.87 = 87,397.59/x
  3. Step 3: Cross multiply
    159,017.51x = 219,434.87 × 87,397.59
  4. Step 4: Simplify right side
    159,017.51x = 19,178,078,362.98
  5. Step 5: Solve for x
    x = 19,178,078,362.98/159,017.51
  6. Step 6: Final answer
    x = 120,603.57

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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.