Home / 138,788,279.64-191,528,959.50-76,909,651.32

Finding the Fourth Proportional to 138,788,279.64, 191,528,959.50 and 76,909,651.32

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Solution

The fourth proportional to 138,788,279.64, 191,528,959.50 and 76,909,651.32 is: 106,135,947.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,788,279.64 : 191,528,959.50 = 76,909,651.32 : x
  2. Step 2: Convert to fraction form
    138,788,279.64/191,528,959.50 = 76,909,651.32/x
  3. Step 3: Cross multiply
    138,788,279.64x = 191,528,959.50 × 76,909,651.32
  4. Step 4: Simplify right side
    138,788,279.64x = 14,730,425,492,827,400
  5. Step 5: Solve for x
    x = 14,730,425,492,827,400/138,788,279.64
  6. Step 6: Final answer
    x = 106,135,947.01

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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.