Home / 105,355.72-145,389.54-62,970.76

Finding the Fourth Proportional to 105,355.72, 145,389.54 and 62,970.76

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Solution

The fourth proportional to 105,355.72, 145,389.54 and 62,970.76 is: 86,898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,355.72 : 145,389.54 = 62,970.76 : x
  2. Step 2: Convert to fraction form
    105,355.72/145,389.54 = 62,970.76/x
  3. Step 3: Cross multiply
    105,355.72x = 145,389.54 × 62,970.76
  4. Step 4: Simplify right side
    105,355.72x = 9,155,289,829.85
  5. Step 5: Solve for x
    x = 9,155,289,829.85/105,355.72
  6. Step 6: Final answer
    x = 86,898.84

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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.