Home / 115,920,003.60-173,880,005.40-87,009,613.20

Finding the Fourth Proportional to 115,920,003.60, 173,880,005.40 and 87,009,613.20

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Solution

The fourth proportional to 115,920,003.60, 173,880,005.40 and 87,009,613.20 is: 130,514,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,920,003.60 : 173,880,005.40 = 87,009,613.20 : x
  2. Step 2: Convert to fraction form
    115,920,003.60/173,880,005.40 = 87,009,613.20/x
  3. Step 3: Cross multiply
    115,920,003.60x = 173,880,005.40 × 87,009,613.20
  4. Step 4: Simplify right side
    115,920,003.60x = 15,129,232,013,067,912
  5. Step 5: Solve for x
    x = 15,129,232,013,067,912/115,920,003.60
  6. Step 6: Final answer
    x = 130,514,419.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.