Home / 109,859,258.72-164,696,209.85-90,429,443.61

Finding the Fourth Proportional to 109,859,258.72, 164,696,209.85 and 90,429,443.61

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Solution

The fourth proportional to 109,859,258.72, 164,696,209.85 and 90,429,443.61 is: 135,567,878.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,859,258.72 : 164,696,209.85 = 90,429,443.61 : x
  2. Step 2: Convert to fraction form
    109,859,258.72/164,696,209.85 = 90,429,443.61/x
  3. Step 3: Cross multiply
    109,859,258.72x = 164,696,209.85 × 90,429,443.61
  4. Step 4: Simplify right side
    109,859,258.72x = 14,893,386,620,959,154
  5. Step 5: Solve for x
    x = 14,893,386,620,959,154/109,859,258.72
  6. Step 6: Final answer
    x = 135,567,878.35

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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.