Home / 118,139.36-163,031.28-67,838.72

Finding the Fourth Proportional to 118,139.36, 163,031.28 and 67,838.72

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Solution

The fourth proportional to 118,139.36, 163,031.28 and 67,838.72 is: 93,616.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,139.36 : 163,031.28 = 67,838.72 : x
  2. Step 2: Convert to fraction form
    118,139.36/163,031.28 = 67,838.72/x
  3. Step 3: Cross multiply
    118,139.36x = 163,031.28 × 67,838.72
  4. Step 4: Simplify right side
    118,139.36x = 11,059,833,355.16
  5. Step 5: Solve for x
    x = 11,059,833,355.16/118,139.36
  6. Step 6: Final answer
    x = 93,616.84

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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.