Home / 105,102.08-145,043.95-57,358.50

Finding the Fourth Proportional to 105,102.08, 145,043.95 and 57,358.50

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Solution

The fourth proportional to 105,102.08, 145,043.95 and 57,358.50 is: 79,156.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,102.08 : 145,043.95 = 57,358.50 : x
  2. Step 2: Convert to fraction form
    105,102.08/145,043.95 = 57,358.50/x
  3. Step 3: Cross multiply
    105,102.08x = 145,043.95 × 57,358.50
  4. Step 4: Simplify right side
    105,102.08x = 8,319,502,826.31
  5. Step 5: Solve for x
    x = 8,319,502,826.31/105,102.08
  6. Step 6: Final answer
    x = 79,156.41

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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.