Home / 105,298.52-145,312.07-57,551.90

Finding the Fourth Proportional to 105,298.52, 145,312.07 and 57,551.90

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Solution

The fourth proportional to 105,298.52, 145,312.07 and 57,551.90 is: 79,421.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,298.52 : 145,312.07 = 57,551.90 : x
  2. Step 2: Convert to fraction form
    105,298.52/145,312.07 = 57,551.90/x
  3. Step 3: Cross multiply
    105,298.52x = 145,312.07 × 57,551.90
  4. Step 4: Simplify right side
    105,298.52x = 8,362,984,707.11
  5. Step 5: Solve for x
    x = 8,362,984,707.11/105,298.52
  6. Step 6: Final answer
    x = 79,421.68

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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.