Home / 128,012,926.79-176,658,278.64-69,275,576.34

Finding the Fourth Proportional to 128,012,926.79, 176,658,278.64 and 69,275,576.34

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Solution

The fourth proportional to 128,012,926.79, 176,658,278.64 and 69,275,576.34 is: 95,600,533.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,012,926.79 : 176,658,278.64 = 69,275,576.34 : x
  2. Step 2: Convert to fraction form
    128,012,926.79/176,658,278.64 = 69,275,576.34/x
  3. Step 3: Cross multiply
    128,012,926.79x = 176,658,278.64 × 69,275,576.34
  4. Step 4: Simplify right side
    128,012,926.79x = 12,238,104,068,018,312
  5. Step 5: Solve for x
    x = 12,238,104,068,018,312/128,012,926.79
  6. Step 6: Final answer
    x = 95,600,533.28

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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.