Home / 128,030.04-191,673.18-74,559

Finding the Fourth Proportional to 128,030.04, 191,673.18 and 74,559

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Solution

The fourth proportional to 128,030.04, 191,673.18 and 74,559 is: 111,621.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,030.04 : 191,673.18 = 74,559 : x
  2. Step 2: Convert to fraction form
    128,030.04/191,673.18 = 74,559/x
  3. Step 3: Cross multiply
    128,030.04x = 191,673.18 × 74,559
  4. Step 4: Simplify right side
    128,030.04x = 14,290,960,627.62
  5. Step 5: Solve for x
    x = 14,290,960,627.62/128,030.04
  6. Step 6: Final answer
    x = 111,621.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.