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Finding the Fourth Proportional to 158,875.52, 219,258.95 and 87,256.28

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Solution

The fourth proportional to 158,875.52, 219,258.95 and 87,256.28 is: 120,419.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,875.52 : 219,258.95 = 87,256.28 : x
  2. Step 2: Convert to fraction form
    158,875.52/219,258.95 = 87,256.28/x
  3. Step 3: Cross multiply
    158,875.52x = 219,258.95 × 87,256.28
  4. Step 4: Simplify right side
    158,875.52x = 19,131,720,445.57
  5. Step 5: Solve for x
    x = 19,131,720,445.57/158,875.52
  6. Step 6: Final answer
    x = 120,419.57

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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.