Home / 78,238,977.60-109,761,316.80-78,238,977.60

Finding the Fourth Proportional to 78,238,977.60, 109,761,316.80 and 78,238,977.60

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Solution

The fourth proportional to 78,238,977.60, 109,761,316.80 and 78,238,977.60 is: 109,761,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,238,977.60 : 109,761,316.80 = 78,238,977.60 : x
  2. Step 2: Convert to fraction form
    78,238,977.60/109,761,316.80 = 78,238,977.60/x
  3. Step 3: Cross multiply
    78,238,977.60x = 109,761,316.80 × 78,238,977.60
  4. Step 4: Simplify right side
    78,238,977.60x = 8,587,613,206,461,703
  5. Step 5: Solve for x
    x = 8,587,613,206,461,703/78,238,977.60
  6. Step 6: Final answer
    x = 109,761,316.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.