Home / 145,415,901.12-200,666,940-79,332,465.60

Finding the Fourth Proportional to 145,415,901.12, 200,666,940 and 79,332,465.60

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Solution

The fourth proportional to 145,415,901.12, 200,666,940 and 79,332,465.60 is: 109,474,981.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,415,901.12 : 200,666,940 = 79,332,465.60 : x
  2. Step 2: Convert to fraction form
    145,415,901.12/200,666,940 = 79,332,465.60/x
  3. Step 3: Cross multiply
    145,415,901.12x = 200,666,940 × 79,332,465.60
  4. Step 4: Simplify right side
    145,415,901.12x = 15,919,403,114,607,262
  5. Step 5: Solve for x
    x = 15,919,403,114,607,262/145,415,901.12
  6. Step 6: Final answer
    x = 109,474,981.70

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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.