Home / 145,000,799.19-200,101,935.06-78,921,139.86

Finding the Fourth Proportional to 145,000,799.19, 200,101,935.06 and 78,921,139.86

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Solution

The fourth proportional to 145,000,799.19, 200,101,935.06 and 78,921,139.86 is: 108,911,625.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,000,799.19 : 200,101,935.06 = 78,921,139.86 : x
  2. Step 2: Convert to fraction form
    145,000,799.19/200,101,935.06 = 78,921,139.86/x
  3. Step 3: Cross multiply
    145,000,799.19x = 200,101,935.06 × 78,921,139.86
  4. Step 4: Simplify right side
    145,000,799.19x = 15,792,272,803,126,898
  5. Step 5: Solve for x
    x = 15,792,272,803,126,898/145,000,799.19
  6. Step 6: Final answer
    x = 108,911,625.95

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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.