Home / 105,177.04-145,143.75-57,430.42

Finding the Fourth Proportional to 105,177.04, 145,143.75 and 57,430.42

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Solution

The fourth proportional to 105,177.04, 145,143.75 and 57,430.42 is: 79,253.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,177.04 : 145,143.75 = 57,430.42 : x
  2. Step 2: Convert to fraction form
    105,177.04/145,143.75 = 57,430.42/x
  3. Step 3: Cross multiply
    105,177.04x = 145,143.75 × 57,430.42
  4. Step 4: Simplify right side
    105,177.04x = 8,335,666,522.88
  5. Step 5: Solve for x
    x = 8,335,666,522.88/105,177.04
  6. Step 6: Final answer
    x = 79,253.67

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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.