Home / 145,450,803.16-200,720,454.77-79,372,425.69

Finding the Fourth Proportional to 145,450,803.16, 200,720,454.77 and 79,372,425.69

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Solution

The fourth proportional to 145,450,803.16, 200,720,454.77 and 79,372,425.69 is: 109,533,045.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,450,803.16 : 200,720,454.77 = 79,372,425.69 : x
  2. Step 2: Convert to fraction form
    145,450,803.16/200,720,454.77 = 79,372,425.69/x
  3. Step 3: Cross multiply
    145,450,803.16x = 200,720,454.77 × 79,372,425.69
  4. Step 4: Simplify right side
    145,450,803.16x = 15,931,669,380,893,262
  5. Step 5: Solve for x
    x = 15,931,669,380,893,262/145,450,803.16
  6. Step 6: Final answer
    x = 109,533,045.09

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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.