Home / 128,036.60-176,681.05-74,312.94

Finding the Fourth Proportional to 128,036.60, 176,681.05 and 74,312.94

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Solution

The fourth proportional to 128,036.60, 176,681.05 and 74,312.94 is: 102,546.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,036.60 : 176,681.05 = 74,312.94 : x
  2. Step 2: Convert to fraction form
    128,036.60/176,681.05 = 74,312.94/x
  3. Step 3: Cross multiply
    128,036.60x = 176,681.05 × 74,312.94
  4. Step 4: Simplify right side
    128,036.60x = 13,129,688,744.56
  5. Step 5: Solve for x
    x = 13,129,688,744.56/128,036.60
  6. Step 6: Final answer
    x = 102,546.37

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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.