Home / 128,271.79-176,999.73-70,903.36

Finding the Fourth Proportional to 128,271.79, 176,999.73 and 70,903.36

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Solution

The fourth proportional to 128,271.79, 176,999.73 and 70,903.36 is: 97,838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,271.79 : 176,999.73 = 70,903.36 : x
  2. Step 2: Convert to fraction form
    128,271.79/176,999.73 = 70,903.36/x
  3. Step 3: Cross multiply
    128,271.79x = 176,999.73 × 70,903.36
  4. Step 4: Simplify right side
    128,271.79x = 12,549,875,576.09
  5. Step 5: Solve for x
    x = 12,549,875,576.09/128,271.79
  6. Step 6: Final answer
    x = 97,838.16

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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.