Home / 128,012,931.81-176,658,285.54-69,275,581.35

Finding the Fourth Proportional to 128,012,931.81, 176,658,285.54 and 69,275,581.35

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Solution

The fourth proportional to 128,012,931.81, 176,658,285.54 and 69,275,581.35 is: 95,600,540.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,012,931.81 : 176,658,285.54 = 69,275,581.35 : x
  2. Step 2: Convert to fraction form
    128,012,931.81/176,658,285.54 = 69,275,581.35/x
  3. Step 3: Cross multiply
    128,012,931.81x = 176,658,285.54 × 69,275,581.35
  4. Step 4: Simplify right side
    128,012,931.81x = 12,238,105,431,077,798
  5. Step 5: Solve for x
    x = 12,238,105,431,077,798/128,012,931.81
  6. Step 6: Final answer
    x = 95,600,540.18

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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.