Home / 145,000,814.16-200,101,955.82-78,921,154.92

Finding the Fourth Proportional to 145,000,814.16, 200,101,955.82 and 78,921,154.92

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Solution

The fourth proportional to 145,000,814.16, 200,101,955.82 and 78,921,154.92 is: 108,911,646.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,000,814.16 : 200,101,955.82 = 78,921,154.92 : x
  2. Step 2: Convert to fraction form
    145,000,814.16/200,101,955.82 = 78,921,154.92/x
  3. Step 3: Cross multiply
    145,000,814.16x = 200,101,955.82 × 78,921,154.92
  4. Step 4: Simplify right side
    145,000,814.16x = 15,792,277,455,065,216
  5. Step 5: Solve for x
    x = 15,792,277,455,065,216/145,000,814.16
  6. Step 6: Final answer
    x = 108,911,646.78

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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.